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题目
题型:不详难度:来源:
He looks very tired . He ____ to bed too late last night .
A.must goB.must have goneC.could goD.didn""t go

答案
B。
解析
must 用于表示推测时,只能用于肯定句,完成式表示对过去情况的推测。
核心考点
试题【He looks very tired . He ____ to bed too late last night . A.must goB.must have 】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
If you ____ me , I""ll give you some advice .
A.listened toB.will hearC.will listen toD.will listen

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A lion ____ only attack a human being when it is hungry .
A.shouldB.canC.willD.shall

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I""m surprised that he ____ to help me when I needed his help .
A.should refuseB.would have refused
C.should have refused toD.may have refused

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— Would you open the window , please ?
— Yes , I ____ .
A.willB.wouldC.doD.can

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The money was soon spent , so he ____ go hungry .
A.mustB.had toC.mightD.should

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