When he was old, Mr Smith _____ sit for hours without saying anything. A．would

题型：不详难度：来源：

When he was old, Mr Smith _____ sit for hours without saying anything.

A．would　　

B．should　　

C．must　　

D．will

答案

解析

略

举一反三

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

A．mustn’t　　

B．isn’tableto

C．maynot　

D．cannot

题型：不详难度：| 查看答案

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

题型：不详难度：| 查看答案

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

题型：不详难度：| 查看答案