25. I didn't know his telephone number, otherwise I ______ him.

A. had telephoned　　 B. would telephone　　　　 C. would have telephoned　　　 D. telephone

24. It is important that we ________.

　 A. shall close the window before we leave　　 B. will close the window before we leave

　 C. must close the window before we leave　　 　 D. close the window before we leave

23. His tired face suggested that he ________ really tired after the long walk.

　 A. had been　　　　 　　　 B. was　　　　　　　　　 C. be　　　　　　 D. should be

22. ---- Would you have called her up had it been possible?

---- Yes, but I ________. busy doing my homework..

A. was　　　　　　　　　　 B. were　　　　　　　　 C. had been　　　　　 D. would be

21. Our monitor requested that ________.

A. all the class studied more carefully the problem

B. the problem was more carefully studied

C. with great care the problem could be studied　

D. all the class study the problem more carefully

20. If you ________ that film late last night, you wouldn't be so sleepy.

　 A. didn't see　　　 B. haven't seen　 C. wouldn’t have seen 　 D. hadn’t seen

19. If you had enough money, what ________ ?

　 A. will you buy　　　　 　　　　　　　　　　 B. would you buy

C. would you have bought　　　 　　　　　　 D. will you have bought

18. Jane would never have gone to the party ________ that Mary would come to see her.

　 A. has she known　　　 B. had she known　 C'. if she know　　　 D. if she has known

17. Mr. Smith insisted that he ________ the work all.

A. had done　　　　　 B. have done　　　　　　　　 C. did　　　　　　 D. so

16. Mike's father, as well as his mother, insisted that he ________ home.

　 　A. stayed　　　　　　　 B. could stay　　　　　　 C. has stayed　　　　 D. stay