----- You shouldn’t have talked back to our teacher like that. It was awfully im

题型：不详难度：来源：

----- You shouldn’t have talked back to our teacher like that. It was awfully impolite.
----- You are right. I _________ crazy at that moment.

A．could have been	B．can be
C．must have been	D．should have been

答案

解析

对过去事情的猜测用must have done

举一反三

“Attention, please. Whoever can answer one of my questions _____ receive a prize,” the teacher said in class.

A．might

B．would

C．should

D．shall

题型：不详难度：| 查看答案

Without Sir Tim, the father of www, keeping up with the latest ______ so convenient.

A．would be

B．wouldn’t be

C．would have been

D．wouldn’t have been

题型：不详难度：| 查看答案

We _____ estimate the spirit of the Shanghai Expo too much, which is sure to play an important role in our daily life.

A．may not

B．should not

C．must not

D．cannot

题型：不详难度：| 查看答案

—Is Pro. Smith giving the speech today?
—It __________ be him. He is abroad right now.

A．can’t

B．needn’t

C．won’t

D．mustn’t

题型：不详难度：| 查看答案

It ___ be the postman at the door. It’s only six o’clock.

A．mustn’t

B．can’t

C．won’t

D．needn’t

题型：不详难度：| 查看答案