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Câu hỏi:
When food and germs collect in a small crack, our teeth ..........
- A. become hard
- B. begin to decay
- C. send poisons into the blood
- D. make us feel quite ill
Lời giải tham khảo:
Đáp án đúng: B
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CÂU HỎI KHÁC
- Don’t forget to wash your ________before meals.
- It’s ________to brush your teeth every day.
- My aunt tells us a lot ________you.
- Wash vegetables and fruit before ________.
- -________do you brush your teeth? –Twice a day.
- What do you do ________yourself clean and tidy?
- I know how to take care ________myself.
- The dentist ________a cavity in my tooth.
- What does a dentist look after? - She looks after people’s ________.
- Most children feel ________when they come to see the dentist.
- Hoa ________up early and does some exercise every day.
- I received a letter ________my aunt last week.
- Don’t eat too ________candy.
- Wash your hands ________meals.
- Remember ________your teeth after meals.
- Good teeth help us to ………............
- When food and germs collect in a small crack, our teeth ..........
- A lot of people visit a dentist only when...............
- We ought to try to clean our teeth...............................................
- We shouldn’t eat a lot of …………………
