-Is Jack on duty today?-It ____ be him. It’s his turn tomorrow.A.mustn’tB.won’tC
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-Is Jack on duty today? -It ____ be him. It’s his turn tomorrow.A.mustn’t | B.won’t | C.can’t | D.needn’t |
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答案
C |
解析
句意:是Jack值日吗?一定不是他。他轮到明天的。can用在否定句中表示有把握的推测。 |
举一反三
I_______ such a foolish mistake if I had been a little more careful.A.wouldn’t make | B.wouldn’t have made | C.hadn’t made | D.didn’t make |
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We ________ such great achievements without your efforts. Thanks a lot.A.can’t have made | B.couldn’t have made | C.were unable to make | D.are unable to make |
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