22. Susan ____ written a report like this.　

A. can have 　　　　　 B. mustn't have 　　 C. can't have 　　　　 D. ought to not have

21. That young man has made so much noise that he ____ not have been allowed to attend the concert.　

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

20. I didn't see her in the meeting-room this morning. She ____ at the meeting.　

A. mustn't have spoken 　　　　　　　　　　　 B. shouldn't have spoken

C. needn't have spoken 　　　　　　　　　　　 D. couldn't have spoken

19. The new airport ____ if they had not stopped working on it.　

A. would complete 　　　　　　　　　　　　　 B. had been completed

C. had completed 　　　　　　　　　　　　　　　 D. would have been completed

18. --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

17. Sorry I'm late. I ____ have turned off the alarm and gone back to sleep again.　

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

16. --I stayed at a hotel while in New York.　

--Oh, did you? You ____ with Barbara.　

A. could have stayed 　　　 B. could stay 　　　　 C. would stay 　　　 D. must have stayed

15. --If he ____, he ____ that food.　

--Luckily he was sent to the hospital immediately.　

A. was warned; would not take 　　　　　　 B. had been warned; had not taken

C. would be warned; had not taken 　　　　　　　 D. would have been warned; had not taken

14. If you had worked harder, you ____.

A. would succeed 　　　　　　　　　　　 B. had succeeded 　　　　

C. should succeed 　　　　　　　　　　　 D. would have succeeded

13. I told Sally how to get there, but perhaps I ____ for her.　

A. had to write it out 　　　　　　　　 B. must have written it out

C. should have written it out 　　　　　　　 D. ought to write it out