HOC247 xin giới thiệu đến quý thầy cô giáo và các em học sinh Chuyên đề Modal Verbs được biên soạn và tổng hợp bao gồm hệ thống lý thuyết và bài tập đi kèm với đáp án đi kèm sẽ giúp các em luyện tập, nắm vững kiến thức đồng thời đối chiếu kết quả, đánh giá năng lực bản thân từ đó có kế hoạch học tập phù hợp. Mời các em cùng tham khảo!
CHUYÊN ĐỀ MODAL VERBS
PHẦN 1. LÝ THUYẾT
A. MODALS
I/ Can
1. Form
* S + can + V
* S + can't + V
* Can + S + V ?
2. The use * Chỉ khả năng ai đó biết làm gì ở hiện tại
Eg : - I can swim but I can't sew.
- Can you speak English ?
- Yes, I can / No, I can't
* Dùng trong lời yêu cầu ai làm gì
Eg : - Can you get me the pen ?
- Yes, certainly / Sorry, I can't
*Dùng trong lời xin phép làm gì
Eg : - Can I have some more coffee ? ( Tôi có thể xin chút cà phê nữa đượ chứ ?)
II/ Could
1. Form
* S + Could + V
* S + couldn't + V
* Could + S + V ?
2. The use
*Chỉ khả năng ai đó biết làm gì trong quá khứ
Eg : - I could swim when I was 10.
* Dùng trong lời yêu cầu lịch sự
Eg : - Could you tell me the way to the bank please ? ( Nhờ ông chỉ giúp đường tới ngân hàng)
* Được dùng khi muốn xin phép làm gì
Eg : - Could I speak to Mr Baker ? (Tôi có thể nói chuyện với ông Baker được không ?)
* So sánh giữa could và was/were able to (có thể)
- Could để chỉ khả năng nói chung
- was / were able to để chỉ khả năng ai đó làm một việc gì trong một tình huống cụ thể.
Eg : - He could swim when he was 10.
- His house got fire yesterday. Luckily, he was able to get out of it.
( Hôm qua nhà ông ấy bị cháy. Rất may là ông ta đã thoát ra được)
III/ Must
1. Form
* S + must + V
* S + mustn't + V
* Must + S + V ?
2. The use * Diễn tả điều chắc chắn xảy ra ở hiện tại
Eg : - He's been walking for two hours. He must be very tired.( Anh ta đã đi bộ suốt 2 tiếng đồng hồ. Chắc hẳn anh ta rất mệt)
* Diễn tả một nghĩa vụ, điều cần thiết phải làm.
Eg : - You must work hard. ( Anh phải làm việc chăm)
* So sánh giữa must và have to (phải)
- Have to có thể được dùng ở hiện tại, quá khứ hoặc tương lai.
Eg : - I have to clean the door now.
- We had to go to Hai Phong yesterday.
- You 'll have to come here early tomorrow.
- Must không được dùng ở quá khứ. Dùng had to thay must trong quá khứ.
Eg : - You must go to London now / tomorrow.
- He had to go to London yesterday.
- Mustn't do sth : Không được phép làm gì
- Not have to do sth : Không cần phải làm gì
Eg : - You mustn't smoke here. (Các anh không được hút thuốc ở đây)
- You don't have to do this. (Anh không cần phải làm việc này)
IV/ May ( Có lẽ)
1. Form
* S + may + V
* S + mayn't (may not) + V
* May + S + V ?
2. The use * Dùng để đưa ra phỏng đoán
Eg : - He may be in his room now. ( Có lẽ anh ấy đang ở trong phòng)
= Perhaps he is in his room now.
Maybe
It's possible that
- She may be watching TV now. ( Có lẽ cô ấy đang xem ti vi)
= Perhaps she is watching TV now.
Maybe
It's possible that
- He may go to London tomorrow. ( Ngày mai có thể nó sẽ đi London)
= Perhaps he will go to London tomorrow.
Maybe
* Dùng trong câu xin phép
Eg : - May I sit here ?
* Dùng trong lời đề nghị
Eg : - May I do this for you ?
V/ Might
1. Form :
* S + might + V
* S + mightn't (might not) + V
* Might + S + V ?
2. The use Giống như cách sử dụng của May
VI/ Should ( Nên)
1. Form
* S + should + V
* S + shouldn't ( should not) + V
* Should + S + V ?
2. The use * Dùng trong lời khuyên
Eg : - You should drink milk.
- You shouldn't smoke.
VII/ Ought to = Should
1. Form
* S + ought to + V
* S + oughtn't to + V
* Ought + S + to + V ?
2. The use * Cách dùng giống như should
VIII/ Need (Cần)
1. Form
* S + need + V
* S + needn't + V
* Need + S + V ?
2. The use
* Diễn tả điều cần thiết phải làm
Eg : - Need I go ? ( Tôi có cần phải đi không ? )
- Yes, you must / No, you needn't - You needn't go
Notes : Khi need là động từ khuyết thiếu, nó thường được dùng với câu hỏi và câu phủ định.
- Need có thể được dùng như động từ thường. Sau need là động từ nguyên thể (to-infinitive)
Eg : - Do I need to go ?
- You don't need to go. - She needs to go.
* Cách sử dụng đặc biệt của need
sth needs doing / to be done ( Cái gì đó cần được làm)
Eg : - Your hair needs cutting / to be cut.
B. MODALS + PERFECT INFINITIVE
1. Must have done
* Diễn tả điều chắc chắn đã xảy ra trong quá khứ
Eg : - There was a big explosion some minutes ago. You must have heard it.
( Cách đây vài phút có tiếng nổ lớn. Chắc hẳn cậu đã nghe thấy)
- He got a bad mark yesterday. He must have been sad.
( Hôm qua anh ta bị điểm kém. Chắn chắn là anh ta rất buồn )
2. Can't/ Couldn't have done
* Diễn tả điều chắc chắn đã không thể xảy ra trong quá khứ.
Eg : - Mr Smith was in Paris yesterday. So he can't have stolen your car.
= Surely, he didn't steal your car.
- Ông Smith ở Paris hôm qua cho nên chắc chắn ông ta không thể lấy cắp chiếc xe của ông được.
3. May/ Might have done
* Diễn tả điều có lẽ đã xảy ra trong quá khứ.
Eg : - I can't find my sunglasses at home. I may have left them at my friend's . = Perhaps, I left them at my friend's . ( Tôi không thể tìm thấy kính. Có lẽ tôi đã để quên ở nhà bạn tôi)
4. May/ Might not have done
* Diễn tả điều có lẽ đã không xảy ra trong quá khứ.
Eg : - His wife was not happy this morning. He might not have bought her the dress she loved.
( Vợ ông ta sáng nay không vui. Có lẽ ông ta đã không mua cho bà ta cái váy mà bà ấy thích)
= Perhaps, he didn't buy her the dress she loved.
5. Should have done = Ought to have done
* Diễn tả điều lẽ ra đã nên làm trong quá khứ.
Eg : - I didn't go to the cinema last night. The film was very interesting. I should have gone to see it. ( Hôm qua tôi không đi xem phim. Bộ phim rất hay. Lẽ ra tôi nên đi xem thì hơn)
6. Shouldn't have done / Oughtn't to have done
Eg 1 : - Why didn't you visit your uncle yesterday ? He wanted to see you. You shouln't have stayed at home. ( Tại sao hôm qua cậu không đi thăm bác ? Bác ấy muốn gặp cậu. Lẽ ra cậu đã không nên ở nhà)
Eg 2 : - Oh, I feel tired.( Tôi cảm thấy mệt)
- You shouldn't have eaten so much.
( Cậu lẽ ra đã không nên ăn quá nhiều)
7. Needn't have done
* Diễn tả điều lẽ ra đã không cần phải làm trong quá khứ.
Eg : - I've bought you a hat. ( Anh mua cho em cái mũ)
- Oh, you needn't have done that. My father has just bought one for me. (Lẽ ra anh không cần phải mua. Bố em đã mua cho em rồi)
PHẦN 2. VÍ DỤ
I. Choose the best option for each sentence:
1) Young people ______ obey their parents.
a. must
b. may
c. will
d. ought to
2) Laura, you and the kids just have dinner without waiting for me. I ______ work very hard today.
a. can
b. may
c. should
d. would
3) I ______ be delighted to show you round the factory.
a. ought to
b. would
c. might
d. can
4) Leave early so that you ______ miss the bus.
a. didn’t
b. won’t
c. shouldn’t
d. mustn’t
5) Jenny's engagement ring is enormous! It ______ have cost a fortune
a. must
b. might
c. will
d. should
6) You ______ to write them today.
a. should
b. must
c. had
d. ought
7) I hope I ______ find it.
a. will
b. shall
c. could
d. must
8) Unless he runs he______ catch the train.
a. will
b. mustn’t
c. wouldn’t
d. won’t
9) ______ you be in Rome tonight.
a. will
b. may
c. might
d. maybe
10) We ______ have time to help you tomorrow.
a. may
b. must
c. will
d. could.
11) "______ you hand me that pair of scissors, please?"
a. May
b. Will
c. Shall
d. Should
12) Jeanette did very badly on the exam. She _____ harder.
a. must have studied
b. should have studied
c. could have studied
d. must studied
13) He was very lucky when he fell off the ladder. He _____ himself.
a. could have hurt
b. should have hurt
c. must have hurt
d. will have hurt
14) Marcela didn't come to class yesterday. She _____ an accident.
a. should have had
b. might have
c. must have
d. may have had
15) John still hasn't come out. He ______ everything for the trip now.
a. must have been preparing
b. will be preparing
c. must be preparing
d. will have prepared
16) Thomas received a warning for speeding. He _____ so fast.
a. shouldn't have driven
b. would have driven
c. should have
d. might have driven
17) The photos are black. The X-ray at the airport _____ them.
a. should have damaged
b. would have damaged
c. would damage
d. must have damaged
18) Tom didn't do his homework, so the teacher became very angry. He _____ his homework.
a. must have done
b. should have done
c. might have
d. will have done
19) My car stopped on the high way. It _____ out of gas
a. may run
b. may have run
c. must be
d. should have run
20) Robert arrived without his book. He _____ it.
a. could have lost
b. should have lost
c. would have lost
d. will have lost
21) "Where do you think Rooney is today?". "I have no idea. He _____ late."
a. should have left
b. would have sleep
c. would sleep
d. may have sleep
22) Berbatov painted his bedroom black. It looks dark and dreary. He _____ a different color.
a. had to choose
b. should have chosen
c. must have chosen
d. could have been choosing
23) The children _____ "thank you" to you when you gave them their gifts.
a. will have said
b. must say
c. should have said
d. should say
24) If we had known your new address, we _____ to see you.
a. came
b. would have come
c. will come
d. would come
25) These two boys look identical. They _____ twins.
a. must have been
b. must be
c. should be
d. should have been
II. Rewrite the sentence in the same meaning:
26) Perhaps Susan know the address. (may)
Susan ........................................................................................................
27) It's possible that Joanna didn't receive my message. (might)
Joanna ......................................................................................................
28) The report must be on my desk tomorrow. (has)
The report .................................................................................................
29) I managed to finish all my work. (able)
I ................................................................................................................
30) It was not necessary for Nancy to clean the flat. (didn't)
Nancy ......................................................................................................
31) The best thing for you to do is to sit down sit down. (better)
You ..........................................................................................................
III. Rewrite the sentence in the same meaning:
32. I think you should give up smoking immediately. (had)
I think you ……………………………………………………
33. I am sure you were surprised when you heard all the news (must)
You ………………………………………………………………….. when you heard the news
34. It’s very inconvenient if you can’t drive. (able)
…………………………………………………………………
35. Someone almost certainly broke the window on purpose. (must)
The window ………………………………………………….. on purpose
36. I am sure that the cat is in the house somewhere. (must)
……………………………………………………………………
37. It is possible that one of the men died on the mountain. (may)One of the men
……………………………………………………on the mountain.
38. It’s necessary for me to bring my passport. (have)
I ……………………………………………………………………
39. It wasn’t necessary for you to do all this work (needn’t)
You ………………………………………………….. all this work
40. I am sure that John is not the thief. (can’t)
…………………………………………………………………..
ĐÁP ÁN
I. Choose the best option for each sentence:
1 - a; 2 - c; 3 - b; 4 - b; 5 - a;
6 - c; 7 - b; 8 - c; 9 - a; 10 - c;
11 - a; 12 - b; 13 - a; 14 - d; 15 - c;
16 - a; 17 - d; 18 - b; 19 - b; 20 - a;
21 - d; 22 - b; 23 - c; 24 - b; 25 - a;
II. Rewrite the sentence in the same meaning:
26. Susan may know the address
27. Joanna mightn't have received my message
28. The report has to be on my desk tomorrow
29. I was able to finish all my work
30. Nancy didn't need to clean the flat
31. You had better sit down
III. Rewrite the sentence in the same meaning:
32. I think you had better give up smoking immediately.
33. You must have been surprised when you heard the news.
34. It is very inconvenient if you aren’t able to drive.
35. The window must have been broken on purpose.
36. I am sure that the cat must be in the house somewhere.
37. One of the men may have died on the mountain.
38. I have to bring my passport.
39. You needn’t have done all this work.
40. I am sure that John can’t be the thief.
PHẦN 3. BÀI TẬP VẬN DỤNG
Exercise 1
1.When my father was young, he _____ work in the garden for long hours.
a. can
b. could
c. will
d. should
2. He_____ have committed the crime because he was with me that day.
a. mustn’t
b. shouldn’t
c. won’t
d. couldn’t
3. Since we have to be there by 8.30, we_____ take a taxi.
a. had better
b. may
c. ought
d. are able to
4. It_____ rain this evening. Why don’t you take an umbrella?
a. could be
b. must
c. might
d. had better
5. _____ you help me with the homework?
a. May
b. Shall
c. Should
d. Will
6. She hasn’t eaten anything since yesterday. She_____ be really hungry.
a. might
b. will
c. must
d. can
7. I put my keys on the table, but now it’s gone. Someone_____ have taken it.
a. may
b. had to
c. should
d. would rather
8. Daisy is reading her English test because she has a test tomorrow. She_____ be studying.
a. will
b. should
c. must
d. can
9. We _____ put the fish in the fridge before it spoils.
a. had to
b. may
c. can
d. had better
10. Mr. Brown is very rich. He_____ work hard for a living.
a. mustn’t
b. shouldn’t
c. can’t
d. doesn’t have to
11. Tom has just got a new job. He_____ be very pleased.
a. might
b. must
c. should
d. will
12. Tom panted his room black. It looks dark and dreary. He _____ have chosen another colour.
a. should
b. must
c. could
d. may
13. _____ you carry this bag for me?
a. May
b. Should
c. Will
d. Shall
14. You _____ throw litter on the streets.
a. mustn’t
b. couldn’t
c. needn’t
d. won’t
15. My mother permitted me to go out at night. She said, “You_____ go out tonight”.
a. may
b. have to
c. must
d. ought to
16. It is possible that she will come to our party tonight. She come her tonight.
a. need
b. may
c. should
d. will
17. They can type. They_____ type.
a. lean how to
b. are able to
c. know how to
d. both B &C
18. He advised me to take an English course. I_____ take it early.
a. should
b. shall
c. will
d. may
19. I’d rather_____ in the field than_____ home.
a. to work/ to stay
b. work /stay
c. working/ staying
d. worked/stayed
20. As an orphan, he _____ earn his living alone.
a. have to
b. has had to
c. ought to
d. had to
Exercise 2
1.They prayed that their daughter_____ be lucky again.
a. may
b. will
c. could
d. might
2. He _____ all that money, so she could save some.
a. didn’t need to spend
b. needn’t have spent
c. shouldn’t spend
d. oughtn’t to spend
3. He spent all that money last week. He_____ so much.
a. didn’t need to spend
b. shouldn’t spend
c. needn’t have spent
d. didn’t have to spend
4. He had to work hard so that he _____ his family.
a. may support
b. supported
c. can support
d. might support
5. They have plenty of time, so they need not_____
a. be hurry
b. to hurry
c. hurry
d. to be hurry
6. You’re having a sore throat. You’d better_____ to the doctor.
a. to go
b. went
c. go
d. going
7. I would rather_____ poor but happy than become rich without happiness.
a. being
b. he
c. to be
d. was
8. Sit down please _____ a cup of tea?
a. Do you like
b. Do you like to drink
c. Would you like
d. Will you like
9. Must you come when your neighbour calls?
No, I_____
a. must not
b. mustn’t
c. don’t have to
d. must not come
10. May I have 2 tickets, please? two tickets, please?
a. You must given me
b. You have got to give me
c. Could I have
d. You may give me
11. He will have to stay in hospital. That’s what he_____
a. has done
b. must do
c. must be doing
d. must have done
12. Do you have to buy this hat? No, I _____. It isn’t necessary.
a. mustn’t
b. won’t
c. needn’t
d. don’t need
13. A man never have too many ties. It’s ______
a. unable
b. impossible
c. improbable
d. incapable
14. It could not tell the difference between Indian music and jazz.
a. might not
b. may not
c. mustn’t
d. wasn’t able to
15. This plane could get over the mountain if it rose to 10,000 feet. This means it______ over the mountains.
a. would succeed in getting
b. got
c. was bale to get
d. had got
16. The plane was then able to rise. This means it______
a. could rise
b. might rise
c. might succeed in rising
d. rose
17. Byrd knew that he would be able to reach the South Pole. It would be______.
a. impossible
b. necessary
c. able
d. possible
18. He ought not______ him but she did.
a. to tell
b. to telling
c. tell
d. to have told
19. I’d rather you______ that.
a. do
b. don’t do
c. won’t do
d. didn’t do
20. ______ run so fast?
a. Does he need
b. Need he to
c. Need he
d. Needs he
Exercise 3
1.He didn’t need______ out of his room in Moscow.
a. go
b. to going
c. going
d. to go
2. I could not ______ it even though I had wanted to do so.
a. had bought
b. buy
c. buying
d. have bought
3. I left my pen in this box, but it isn’t there now. Someone______ it.
a. must have taken
b. must take
c. had to take
d. had taken
4. Mary received 100 dollars from her sister. She______ the ring she wanted. It only costs 10 dollars.
a. buys
b. had bought
c. bought
d. might have bought
5. It lost my Honda last week; I hadn’t locked it. You______ it.
a. should lock
b. should have locked
c. ought to lock
d. could lock
6. In 1900 the world had no deaths from rabies. Scientists______ wonderful vaccine.
a. has discovered
b. discovered
c. must have discovered
d. should have discovered
7. Mary received 100 dollars from her sister. She______ the computer she wanted. It costs 200 dollars.
a. wouldn’t buy
b. hadn’t bought
c. couldn’t have bought
d. didn’t buy
8. Once Helen failed in her exam. She played too much. She______ too much.
a. shouldn’t have played
b. should play
c. shouldn’t play
d. wouldn’t have played
9. If I had liked that watch, may be I ______ bought it.
a. will have
b. must have
c. would have
d. shall have
10. Did my sister tell you that I had been to Dalat?
a. might have
b. could have
c. would have
d. must have
11. The women of this tribe______ precious ornaments for slat because they didn’t have any salt.
a. have traded
b. traded
c. would have traded
d. could trade
12. I took my only son to the park but he didn’t like it. You ______ him to the zoo.
a. should take
b. had to take
c. took
d. should have taken
13. We are now wet. You______ the raincoats with you.
a. should bring
b. should have brought
c. must bring
d. have to bring
14. The yard is wet. It______ last night.
a. must rain
b. must have rain
c. must have rained
d. had to rain
15. Many birds will______ more than 3,000 miles to reach their winter homes.
a. flying
b. fly
c. be fly
d. flew
16. The pen won’t write; it______ out of ink.
a. must run
b. must be running
c. must have run
d. must have ran
17. The line is busy; someone______ the telephone now.
a. must be using
b. must have used
c. must used
d. must have been using
18. Bob is absent; he______ sick gain now.
a. must have been
b. must be
c. must be being
d. must being
19. He______ his j ob because he seems very happy.
a. would like
b. can like
c. will like
d. must like
20. She told me that she’d rather______ on the committee.
a. not to serve
b. not serving
c. not serve
d. serving not
EX 4.
1.Nancy was refused to be given a scholarship to study abroad two days ago. She could
A B C
have been very sad.
D
2. There is no parking sign here so you would better take your car out of here now.
A B C D
3. If you are free today, you will join our party at the club.
A B C D
4. The company is going to held a party to celebrate the establishment .
A B C D
5. The manager would dismiss his secretary if the secretary makes such stupid mistakes in the reports.
A B C D
6. The little girl says that her parents have been out but she could contact them easily
A B C D
7. The men are able work better than they did last year.
A B C D
8. When we were children, we use to climb over the wall to get into the neighbor’s garden.
A B C D
9. If the boy had come home last night, he will have seen a gift lying on the table.
A B C D
10. The New Year’s Eve party can be held in a person’s house to celebrate the changing
A B C
of the calendar next week.
D
11. Do you please tell us the way to the nearest post office here?
A B C D
12. When you feel tired of working so hard, you will take a break to relax.
A B C D
13. There is a No Parking sign, so you won’t park your car here.
A B C D
14. You have to be hurry if you do not want to miss the last bus.
A B C D
15. The man is very intelligent because he is able to speak five languages.
A B C D
16. You have to do your homework every day.
A. Your homework has been done every day.
B Your homework has to do by you every day.
C Your homework has to be done every day.
D Your homework have to be done every day.
17. You shouldn’t tell her the news. It might kill her.
A. She shouldn’t be told by the news. She might be killed.
B. The news shouldn’t be told her. She might be killed.
C. She shouldn’t be told the news. She might be killed.
D. She shouldn’t been told the news. It might be killed.
18. It wasn’t obligatory to submit my assignment today.
A. My assignment must have been submitted today.
B. I needn’t have submitted my assignment today.
C. My assignment was required to submit by today.
D. I mustn’t submit my assignment today.
19. It’s time we left for the disco.
A. We may leave for the disco now.
B. We needn’t leave for the disco now.
C. We should leave for the disco now.
D. We must have left for the disco now.
20. It was a mistake of you to lose your passport.
A. You shouldn’t have lost your passport.
B. There must be a mistake in your passport.
C. You needn’t have brought your passport.
D. Your passport must be lost.
21. My car keys are possibly in the kitchen.
A. My car keys should be put in the kitchen.
B. My car keys cannot be in the kitchen.
C. I don’t know whether my car keys are in the kitchen.
D. My car keys might be in the kitchen.
22. Is it possible for me to come to your house at about 7pm?
A. Must I come over to your house at about 7pm?
B. Could I be coming to your house at about 7pm?
C. Can I come to your house at about 7pm?
D. Will I come to your house at about 7pm?
23. You must never take off your helmet while you are riding a motorcycle.
A. If you are riding a motorcycle, you needn’t wear a helmet.
B. When you are riding a motorcycle, wearing a helmet is not a must.
C. You needn’t wear a helmet whenever you are riding a motorcycle
D. Helmets must be worn at all times when you are riding a motorcycle
24. I have done this math problem at least twenty times, but my answer is wrong according to the answer key.
A. The answer in the book should be wrong!
B. The book needn’t have a wrong answer.
C. There is a wrong answer in the book.
D. The answer in the book must be wrong!
25. Can you tell me directions for the station near here?
A. Would you tell me where to get to the station near here?
B. Could you tell me how to get to the station near here?
C. Could you tell me what to get to the station near here?
D. Must you tell me the way to get to the station near here?
26. A: John passed his exam with a distinction. B: _______.
A. He was too lazy to succeed
B. He can’t have studied very hard
C. He must have studied very hard
D. He needs studying harder
27. I often get up early in the morning.
A. I’m used to getting up early in the morning
B. I’m used to get up early in the morning.
C. I used to get up early in the morning
D. I used to getting up early in the morning.
28. Please don’t use the shower after midnight
A. Would you mind not to use the shower?
B. Would you like to use the shower before midnight?
C. I don’t want you to use the shower.
D. Would you mind not using the shower after midnight?
29. The carpet still needs cleaning.
A. The carpet has been cleaned.
B. The carpet hasn’t cleaned yet.
C. The carpet has not been cleaned.
D. The carpet has cleaned.
30. I prefer going out for a meal to staying at home.
A. I’d like to go out for a meal.
B. Going out for a meal is very interesting.
C. I’d rather go out for a meal than stay at home.
D. Staying at home is more boring than going out for a meal.
31. He said that he _________ enter the examination room because he was late.
A. mustn’t
B. couldn’t
C. needn’t
D. might not
32. “__________ taking me downtown on your way to work this morning?” – Not at all.
A. Can you
B. Why don’t you
C. Could you please
D. Would you mind
33. You haven’t eaten anything since yesterday afternoon. You ______ be really hungry!
A. must
B. might
C. will
D. can
34. “Why are you so late?” – I _________ take my aunt to the airport. The traffic was terrible!”
A. might
B. could
C. had to
D. should
35. I wonder who drank all the milk yesterday. It _____ have been Mary because she was out all day.
A. can’t
B. must
C. could
D. needn’t
36. Susan ___________ hear the speaker because the crowd was cheering so loudly.
A. might not
B. couldn’t
C. can’t
D. mustn’t
37. Ted’s flight from Britain took more than 11 hours. He _____ be exhausted after such a long flight.
A. had better
B. can
C. must
D. should
38. You ___________ do the job if you didn’t speak Japanese fluently.
A. couldn’t
B. can’t
C. won’t be able to
D. needn’t
39. When I was young, I __________ go fishing with my father.
A. was used to
B. would
C. may
D. used to
40. You ________ take along some cash. The restaurant may not accept credit cards.
A. has to
B. had better
C. can
D. could
41. Your wedding ring is very precious. You ___________ lose it.
A. must
B. could
C. needn’t
D. mustn’t
42. “How old do you think Peter is?” – “I just looked at his driver’s license. He ______ 33.”
A. might be
B. may be
C. must be
D. should be
43. It ________ rain this evening. Why don’t you take an umbrella?
A. had better
B. might
C. must
D. could
44. You ________ forget to pay the rent tomorrow. The landlord is very strict about paying on time.
A. don’t have to
B. mustn’t
C. couldn’t
D. can’t
45. It’s a school rule. All the students _________ wear a uniform.
A. have to
B. might
C. must
D. need
46. Passengers _______ smoke until the signs have been switched off.
A. mustn’t
B. can’t
C. needn’t
D. mightn’t
47. We must obey the traffic laws. Otherwise, we __________ be punished.
A. will
B. might
C. should
D. need
48.This is the key. You _________ forget to take it with you when going out.
A. should
B. have to
C. mustn’t
D. needn’t
49. You _________ introduce me to Dr. Gray. We have already met.
A. shouldn’t
B. needn’t
C. mustn’t
D. couldn’t
50. “I have got a headache.” – “You _________ go to see the doctor.”
A. may
B. could
C. should
D. might
ĐÁP ÁN
Exercise 1
1B 2D 3A 4C 5D 6C 7A 8C 9D 10D
11b 12a 13c14a 15a 16b 17d 18a 19b 20d
Exercise 2
1d 2a 3c 4d5c 6c 7b 8c 9c 10c
11c 12c13b 14d 15c 16a 17d 18d 19d20c
Exercise 3
1d 2d 3a 4d 5b6c 7c 8a 9c 10b
11c 12d 13b 14c 15b 16c17a 18b 19d 20c
Exercise 4
1.D 2. C 3.C 4. B 5. A 6. C 7. B 8. B 9. C 10. B
11.A 12. C 13.C 14. A15. D 16. C 17. C 18. B 19. C 20. A
21.D 22. C 23.D24. D 25. B26. C 27. A 28. D 29. C 30. C
31.B 32. D33.A 34. C 35. A 36. B 37. C 38. A39. D 40. B
41.D 42. C43.B 44. B 45. C 46. A 47. A 48. C 49. B 50. C
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