Câu hỏi trắc nghiệm (5 câu):
-
- A. Should
- B. Shouldn't
- C. Must
- D. Mustn't
-
- A. Mustn’t
- B. Can
- C. Is allowed to
- D. Is supposed to
-
- A. Are prohibited
- B. Are supposed to
- C. Are discouraged
- D. Are permitted
-
- A. Have to
- B. Ought to
- C. Need
- D. May
-
- A. Hadn’t better
- B. Shouldn’t
- C. had better
- D. Must