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题目
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— Where is John?   — He _____ in the library.
A.should be B.must beC.can be D.must have been

答案
B
解析
must do表示对现在的事实进行推测。
核心考点
试题【 — Where is John?   — He _____ in the library.A.should be B.must beC.can be D.mu】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
One ought _____ for what one hasn’t done.
A.not to be punishedB.to not be punished
C.to not punishedD.not be punished

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If you really want yourself to be in good health, you must ___ always ___ so much.
A.not; be smokingB.not; have smokedC.not; to smokeD.be not; smoking

题型:不详难度:| 查看答案
With so much work on hand, you _____ to see the game last night.
A.mustn’t goB.shouldn’t go C.couldn’t have goneD.shouldn’t have gone

题型:不详难度:| 查看答案
Most of the students felt rather disappointed at the English party. They say that it ______ better organized.
A.had beenB.had to beC.must have beenD.could have been

题型:不详难度:| 查看答案
I’m surprised that he _____ in the exam.
A.should failB.would have failed C.may have failed D.should have failed

题型:不详难度:| 查看答案
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