7. ---______________I visit Lucy on Sunday, Mum?

　　 ---Yes, you______________.

　A. Must；can　 B. May；may　 C. Need；need D. May；need

6. --- Tom, where is your father?

　　 --- I’m not sure. He_______ in his office.

　A. is　　 　　B. may be　　 　C. maybe　　 　D. may

5. --- Must I finish my homework now?

　　 --- No, you _________. You may have a rest first.

　A. mustn’t　 B. can’t　 　　　C. may not　　 D. needn’t

4. ---_______ I finish the work today?　

---No, you needn’t.

　A. Must　 　B. May　 　　　C. Can　　 　　D. Need

3. --- Excuse me. Where is the zoo?

　　 --- Sorry, I don’t know. Ask that policeman. He _____ know.

　A. shall　　 B. may　 　　　C. need　　 　　D. would

2. --- May I go swimming now?

　　 --- No, you ______. You must finish your homework first.

　A. mustn’t　 B. may not　　 C. couldn’t　 　　D. needn’t

1. --- Can you swim in the river?

　　--- No, I _____.

　A. mustn’t　　 B. may not　　 C. can’t　 　　D. needn’t