She didn"t answer the phone.She ___ be asleep.A.couldn"tB.mustn’tC.mightD.had to
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She didn"t answer the phone.She ___ be asleep.A.couldn"t | B.mustn’t | C.might | D.had to |
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答案
C |
解析
might也许; couldn"t意为:不可能; mustn’t意为:不可以/一定不; had to意为:不得不,必须. |
举一反三
He ___ work in Hangzhou, did he?A.usedn’t | B.didn’t used | C.used to | D.usen’t to |
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