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题目
题型:不详难度:来源:
Mary ______ my letter; otherwise she would have replied before now.
A.has received
B.ought to have received
C.couldn’t have received
D.shouldn’t have received

答案
C
解析
考查情态动词用法。关键后半句:要不然,她之前就会给我回信。根据这里的would have replied可知是对过去情况的虚拟,那么前一句也应该是对过去情况的推测。结合句意可知C正确。句意:玛丽不可能收到我的信得。要不然之前就会给我回信的。
核心考点
试题【Mary ______ my letter; otherwise she would have replied before now. A.has receiv】;主要考察你对动词的分类等知识点的理解。[详细]
举一反三
—Thank you very much for giving me a hand when I was in trouble.
—Don’t mention it. I only did what anyone else    in my place.
A.must doB.might doC.would have done D.can have done

题型:不详难度:| 查看答案
—Why can your neighbor know so much about London?
—He ____ have been there before.
A.mustB.canC.shouldD.need

题型:不详难度:| 查看答案
There ____ a temple on the side of the mountain, didn"t there?
A.would beB.would haveC.used to haveD.used to be

题型:不详难度:| 查看答案
Don"t blame such a small boy any more. Even the wisest___ make a mistake sometimes.
A.mustB.canC.shouldD.shall

题型:不详难度:| 查看答案
—Is Mary coming by plane?
—He should ,but he _____not. He likes traveling by train.
A.must B.canC.need D.may

题型:不详难度:| 查看答案
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