24. My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.

　 A. couldn’t have attended　　　　　　 　　 B. needn’t have attended

　 C. mustn’t have attended　　　　　　　　　　 　　 D. shouldn’t have attended

23. I told Sally to fix him up with this job, but perhaps I _________ it out for her.

　　 A. had to write 　　 　　　　　　　　 B. must have written 　

C. should have written　　　　　　　 D. ought to write

22. You ______ pay too much attention to your reading skill, as it is so important.

　　 A. cannot　　　　　　　　　　　　　　 　　　　　　 B. should

C. must　　　　　　　　　　　　 　　　　　　 D. needn’t

21. -I went to work on foot yesterday, though it _________ cats and dogs.

　 -You __________ by bus. It was likely to get a cold.

　 A. is raining; must have gone　　　　　　 B. rained; would go

　 C. was mining; should have gone　　 D. have rained; could have gone

20. -How about paying a visit to Mr. Richardson, our former history teacher?

　 　-Good idea. I will e-mail him today so he _____know _________ to expect us.

　 A. shall; why　　　　 　　　　　　 B. may; when

C. would; why　　 　　　　　　　　　　 D. will; how

19. Professor Smith, many students want to see you. __________ they wait here or outside?

　 　 A. Do　　　　　　　 　　　　　　 B. Shall

C. Will　　　　　　　 　　　　　　　　 D. Would

18. We ________ so tired. We’ve only been to a party.

　　 A. mustn’t have felt　　　　　　　　　　 B. wouldn’t have felt

C. shouldn’t have felt　　　　　　　 D. couldn’t have felt

17. -We need a person badly to think up such an idea.

　 　-_______ the new comer have a try?

　 　 A. Shall　　　　　 　　　　　　　 B. May

C. Should　　　　　 　　　　　　 D. Need

16. -Could you lend me that book you ______ me about when I telephoned you?

　 -No, I am sorry, I can’t. I gave it to a friend.

　　 A. were telling　　　 　　　　　　 B. would tell

C. had told　　　　　 　　　　　　 D. had been telling

15. ____ three people who travel together, there _____ be at least one who ____ be my teacher.

　　 A. Between; can; will　　　　　　　　　 　　 B. In; should; could

　　 C. Among; will; may　　　　　　　　　 　　 D. Of; must; can