As a teacher, I seldom give my students so difficult a problem ________ they ca

题型：不详难度：来源：

As a teacher, I seldom give my students so difficult a problem ________ they can not work out.

A．that

B．if

C．in order that

D．as

答案

解析

略

举一反三

________ him before, I didn"t recognize him.

A．Having never seen　　

B．Never seeing

C．Not seeing　

D．Having not seen

题型：不详难度：| 查看答案

Nowadays everything strange is____strange. That is to say, any unexpected ____thing is possible to happen.

A．something

B．anything

C．nothing

D．everything

题型：不详难度：| 查看答案

It was after he got what he had desired ______ he realized it was not so important.

A．that

B．when

C．since

D．as

题型：不详难度：| 查看答案

It was requested that the play ____again.

A．should put on

B．would put on

C．be put on

D．put on

题型：不详难度：| 查看答案

It was in Beihai Park___they made a date for the first time____the old couple told us their love story.

A．that; that

B．where; when

C．that; when

D．where; that

题型：不详难度：| 查看答案