25. -It is rather cold here. Shall we light a fire?

　　 -No, we _____ because things are easy to catch fire.

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

24. If you _____ wait a moment, I’ll go and find our manager.

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

23. If only he _____ me yesterday!

　　 A. had seen　　　　　B. would see　　　 　C. should see　　　 D. saw

22. He suggests we _____ to the cinema at once, otherwise we will be late.

　　 A. must go　 　　　 B. go　　　　 　　　　　　　 C. will go　　 　　 　　 D. would go

21. -I can’t get through to the general manager’s office anyhow.

　　 -The line is busy. Someone _____ the telephone.

　　 A. must use　　 　　B. uses　　　　 　　 C. must have been using　D. must be using

20. -Do you still remember the day when we went to the Great Wall?

　　 -I can’t remember it well, but _____ sometime last autumn?

　　 A. might it be　　　　　　　　　　　　　　　　　　　 B. could it have been

　　 C. could it be　　　　　　　　 　 　　　　　　 D. must it have been

19. It’s strange that they _____ nothing about this matter.

　　 A. should know　 　B. would know　　　　 C. had known　　　　 D. knew

18. -Could I use your telephone?

　　 -Yes, of course you _____.

　　 A. could　　　　　 B. will　　　　　 　 　C. can　　　　　　 　D. might

17. It’s high time we _____ to the theater.

　　 A. will go　　　　 B. shall go　　　　　 C. are going to　　 D. went

16. Oh, Jane, you’ve broken another glass. You ought _____ when you washed it.

　　 A. be careful　　　B. to care　　 　　　　 C. have cared　　　D. to have been careful