13. ---I'm sorry. I didn't win the race yesterday.

　 ---That's OK. You ______ win every time.

　 A. can't　 B. must　 C. can　　 D. mustn't

12．-David, is that man your Chinese teacher?

　　 一It ______be him．He’s having a meeting．(09宣武一模)

A．mustn’t　　　 B．can’t　　　 C．needn’t　　　 D. won’t

11. We’re in class. You’d better not _________. (09平谷二模)

A. talking　　B. talk　　 C. talked　　 D. to talk

10. - Tom, don’t play with fire; you _____ hurt yourself.

- OK, mum. (09石景山二模)

A. should　　　 B. may　　　　　 C. must　　　 D. need

9. -Who is that man?

-That ______ be Mr. Green. He always walks this way. Hi! Mr. Green. (09东城二模)

　　　 B. may　　 C. need　　 D. must

8. – I can't stop smoking, doctor.　　 -- For your health, I' m afraid you________ (石景山一)

A. may　　　　　　 B. can　　　　　　 C. must　　　　　 D. need

7. – Do you know where Mr Li is?　 -- I’m not sure. He　　　 be in the teachers’ office. (西城二)

A. may　　　　 B. must　 　　　C. will　　　　 D. should

6. -- Sally, may I borrow your notebook?　　 -- Sure, but you　　　　 return it tomorrow. (海淀一24)

A. need　　　　　　 B. must　　　　　　 C. can　　　　　　　 D. may

5. All the passengers _______ wear seat belts on the plane.

　　 A. can　　　　　 B. may　　　　　　 C. will　　　　　　 D. must

4. ---May I put my coat here?

　 ---No, you ______. If you do, you may lose it.

　 A. needn't　　 B. won't　 C. wouldn't D. mustn't