The thought ______he might be a scientist some day encouraged him to study hard.

题型：不详难度：来源：

A．whether

B．that

C．how

D．why

答案

解析

略

举一反三

.Don’t stop______you meet with a word you don’t understand.

A．at that time	B．each time
C．sometimes	D．when every time

题型：不详难度：| 查看答案

______time went on, the people in the area came to realize how serious the environment had been polluted.

A．As

B．With

C．When

D．While

题型：不详难度：| 查看答案

________ it comes to the increasing use of motor vehicles in the cities，some people think it should be limited．

A．Because

B．Once

C．When

D．While

题型：不详难度：| 查看答案

It was only after he had spent several nights digging around the cross ________ he decided to write to Kit Williams to find out if he was wasting his time there.

A．that

B．how

C．and which

D．what

题型：不详难度：| 查看答案

If I were ______ younger, I would go there to help ________ really needs great help.

A．some; who

B．any; who

C．some; whomever

D．any; whoever

题型：不详难度：| 查看答案