Câu hỏi trắc nghiệm (5 câu):
-
- A. use
- B. used
- C. usable
- D. useful
-
- A. not to pollute
- B. not polluting
- C. don’t pollute
- D. if they don’t pollute
-
- A. there are
- B. there were
- C. are there
- D. were there
-
Câu 4:
He told me that
- A. he participated in the conservation campaign the previous day
- B. he has participated in the conservation campaign the previous day
- C. he would participate in the conservation campaign yesterday
- D. he had participated in the conservation campaign the previous day
-
- A. she wrote the article on conservation
- B. did she write the article on conservation
- C. she had written the article on conservation
- D. she has written the article on conservation
