—Could I play computer games for a while, Mum? I’ve finished all my homework. —O

题型：不详难度：来源：

—Could I play computer games for a while, Mum? I’ve finished all my homework.
—Oh, my dear, if you_____.

A．can

B．must

C．dare

D．should

答案

解析

略

举一反三

. With examinations coming immediately, you ________ the Internet last night.

A．mustn’t surf	B．shouldn’t surf
C．couldn’t have surfed	D．shouldn’t have surfed

题型：不详难度：| 查看答案

He was taken away by the police. He _________ a very serious crime.

A．must be committed

B．was being committed

C．must commit

D．must have committed

题型：不详难度：| 查看答案

According to a survey, few children from single-parent families have a hobby and that hobby ______ last for only a year or two.

A．ought

B．must

C．may

D．need

题型：不详难度：| 查看答案

There was plenty of time. She ____ to the station.

A．shouldn’t hurry	B．couldn’t hurry
C．mustn’t have hurried	D．needn’t have hurried.

题型：不详难度：| 查看答案

The ____ expression on his face suggested that he ____ understand what I said.

A．puzzling, should not

B．puzzled, did not

C．puzzle, was not

D．puzzled, not

题型：不详难度：| 查看答案