It was too hard for the firefighters to get close to the burning building．All th

题型：不详难度：来源：

It was too hard for the firefighters to get close to the burning building．All their attempts to rescue the people trapped were .

A．in vain

B．in return

C．in place

D．in danger

答案

解析

略

举一反三

--what effect does the medicine have the blood pressure ?
--- well ,it depends how much you take .

A．with ;on

B．with ; to

C．on ; on

D．on ; to

题型：不详难度：| 查看答案

—What led to his success ?
—He succeed _____ working hard .

A．to

B．in

C．through

D．by

题型：不详难度：| 查看答案

.Slang words (俚语) are made _____ special groups,such as workers and musicians.

A．of

B．into

C．from

D．by

题型：不详难度：| 查看答案

Though _____ my opinion ,my mother didn’t say anything to show that she stood by me.

A．on

B．in

C．for

D．of

题型：不详难度：| 查看答案

Don’t be too hard ________ David; he is only five years old.

A．on

B．to

C．about

D．with

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