Mary ______ my letter; otherwise she would have replied before now. A．has receiv
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 |
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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。 |
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 do | B．might do | C．would have done | D．can have done |
|
—Why can your neighbor know so much about London?
—He ____ have been there before.| A．must | B．can | C．should | D．need |
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There ____ a temple on the side of the mountain, didn"t there?| A．would be | B．would have | C．used to have | D．used to be |
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Don"t blame such a small boy any more. Even the wisest___ make a mistake sometimes.| A．must | B．can | C．should | D．shall |
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—Is Mary coming by plane?
—He should ,but he _____not. He likes traveling by train. |
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