23-24高一上·全国·课后作业
1 . Something ________ have happened to Mary—She’s been crying all morning. (Possibility) (用适当的词填空)
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2 . He __________________________ as he heard the story.
当他听到这个故事时,肯定(气)疯了。
当他听到这个故事时,肯定(气)疯了。
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3 . Look at his strong muscles now! He ________ worked out regularly over the past year.
A.could have | B.should have | C.might have | D.must have |
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4 . Harry ___________too much work to do last night for he did not attend the conference.
A.must have had | B.must have | C.had had | D.had to have had |
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