I was about to leave the office an unexpected visitors came.A．whileB．asC．wh

题型：不详难度：来源：

I was about to leave the office an unexpected visitors came.

A．while

B．as

C．when

D．before

答案

解析

略

举一反三

This depends upon he is interested in doing this kind of work.

A．if

B．whether

C．that

D．what

题型：不详难度：| 查看答案

—I drove to Shanghai for the 2010 Expo last week.
— Is that_____ you had a few days off?

A．because

B．why

C．what

D．where

题型：不详难度：| 查看答案

He seemed to be looking for the words ____ he could express his idea.

A．for which

B．with which

C．in whom

D．in that

题型：不详难度：| 查看答案

He spoke very slowly and clearly ______ I understood him.

A．in order that

B．in case

C．so that

D．as if

题型：不详难度：| 查看答案

He was seriously ill. That’s _______ he didn’t appear at the party.

A．because

B．what

C．why

D．when

题型：不详难度：| 查看答案