--- Where is Jack?--- He _________ football on the playground with those AFS stu

题型：不详难度：来源：

--- Where is Jack?
--- He _________ football on the playground with those AFS students, but I am not sure.

A．must be playing	B．must have played
C．may be playing	D．may have played

答案

解析

略

举一反三

It has been announced that all the students ______ put on the masks before going to school in case they are infected with SARS virus.

A．shall

B．will

C．need

D．may

题型：不详难度：| 查看答案

______you like to have dinner with me this evening?

A．Would

B．Must

C．Dare

D．Can

题型：不详难度：| 查看答案

– I was trying to repair that stupid machine, but I failed.
-- Well, you_______.

A．needn’t do that

B．needn’t have done

C．needn’t have

D．needn’t

题型：不详难度：| 查看答案

It is thought that a new system _____ the place of the old one in that company. But things are getting worse and worse.

A．must have taken

B．will take

C．won’t take

D．had taken

题型：不详难度：| 查看答案

We were very busy yesterday. Otherwise we _____part in the discussion.

A．would take

B．did take

C．had taken

D．would have taken

题型：不详难度：| 查看答案