17. 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
答:D。表示“一定不”,应用couldn’t。must仅用于肯定句中表示推测,故排除A项。
18. Peter _____ come with us tonight,
but he isn’t very sure yet.
A. must
B. may
C. can
D. will
答:B。从后一句 he isn’t very sure yet 可判断B项,may可能。
19. —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
答:A。从后一句“我已经告诉他了”可判断“不必”。
20. —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
答:B。I won’t. 我不会忘。
21. —There were already five people in the car but they managed to take me as well.
—It ________ a comfortable journey.
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