Mary _____ be in London because I saw her in town just now. A．mustn’t　　B．isn’ta

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Mary _____ be in London because I saw her in town just now.

A．mustn’t　　

B．isn’tableto

C．maynot　

D．cannot

答案

解析

略

举一反三

The door is still closed. He _____ the key.

A．musthavelost

B．mustlose　

C．needhavelost

D．canlost

题型：不详难度：| 查看答案

The bus had left, so we _____ walk home.

A．haveto　　

B．ought　　

C．hadto　　

D．must

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You _____ see her, but I must.

A．haven’t　　

B．cannot　

C．mustn’t

D．needn’t

题型：不详难度：| 查看答案

“ _____ you play baseball?” “ No, I _______. “

A．Can; may

B．Can’t; can’t

C．May; can’t

D．can; can

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“ ______ I hand in the paper this week?” “ No, you ______. You _____ hand it in next week.

A．Must; needn’t; may	B．will; mustn’t; ought to
C．Shall; can’t; have to	D．Should; didn’t have to; can

题型：不详难度：| 查看答案