29. --Are you coming to Jeff' s party?

　　 --I am not sure. I _______ go to the concert instead.

　 　A. must　　　　 B. would　　　　 C. should　　　　　 D. might

28.--__ I go out to play now, mum?

　　 --No, you __. You should do your homework first.

　 A. Might; wouldn't　 B. May; had better not　 C. Must; mustn't　 D. Need; mustn't

27. Don't believe him. His story ______ be true.

　　 A. mustn't　　　 B. needn't　　　　　 C. shouldn't　　　 D. may not

25. Look what you have done! You __ have been more careful.

　　 A. may　　　 B. should　　　　　 C. would　　　　 D. had to

25.--Shall I tell John about it?

　　 --No, you _____ . I've told him already.

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

24.--Jane often goes m the cinema. She __ there.

　　 --She __ to the cinema for I saw her just now.

　　 A. can' t have gone; mustn't have gone　　　 B. can have gone ;may not go

　　 C. must have gone; can' t have gone　 　　　D. must have gone ; needn't go

23.--When can I come for the photos? I need them tomorrow afternoon.

　 --They __ be ready by 12:00.

　　 A. can　　　　　 B. should　　　　 C. might　　　　 D. need

22.--Don' t forget to come to my birthday party tomorrow.

　 -- ________

　 　A. I don' t　　　　 B. I won' t　　　 C. I can' t　　　　 D. I haven' t

21.--Will you stay [or lunch?

　 --Sorry, I ______ . My brother is coming to see me.

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

20.Mr Bush is on time for everything. How__ it be that he was late for the opening ceremony?

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