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题目
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 —Why aren’t they here yet?
—They_____ the bus.
A.can have missedB.must be late for
C.may have missedD.might be late for

答案
C
解析
他们未何还未到?可能是未赶上汽车。表示对过去事实的猜测。故选C。
核心考点
试题【 —Why aren’t they here yet?—They_____ the bus.A.can have missedB.must be late fo】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
 —Where ____ Margaret have put the empty bottles?
—She ______ them away. They must be somewhere.
A.can; can’t have thrownB.must; needn’t
C.must; must have thrownD.can; must throw

题型:不详难度:| 查看答案
—We need a person badly to think up such an idea .
—_____ the new comer have a try ?
A.Shall B.MayC.Should D.Need

题型:不详难度:| 查看答案
I’d rather you did some housework when you are free ,but you______ .
A.didn’tB.shouldn’tC.weren’t D.don’t

题型:不详难度:| 查看答案
 The door______. Better have it repaired .
A.isn’t shut B.hasn’t been shut
C.won’t be shut D.won’t shut

题型:不详难度:| 查看答案
 —What’s the matter with you ?                   
—Oh, I’m not feeling well in the stomach . I ______so much fried fish just now .
A.shouldn’t eat B.mustn’t have eaten
C.shouldn’t have eaten D.mustn’t eat

题型:不详难度:| 查看答案
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