----I wonder how much for your services. ----The first two are free the thi

题型：不详难度：来源：

----I wonder how much for your services.
----The first two are free the third one costs $30.

A．while

B．until

C．when

D．before

答案

解析

这里考查while做连词，表示“然而”，表示两句话的对比关系，句意是：我想知道你的服务多少钱？---前两个是免费的，而第三个是30美元。选A。

举一反三

Luckily, we’d brought a road map, _________ we would have lost our way.

A．without it

B．with that

C．without which

D．without that

题型：不详难度：| 查看答案

I met an old friend __________ on the train yesterday.[

A．by chance

B．on purpose

C．in fact

D．in return

题型：不详难度：| 查看答案

_______ the trouble they were in, they still managed to help us with some money.

A．In spite of

B．Because of

C．In terms of

D．In sight of

题型：不详难度：| 查看答案

Nobody knows for sure what effect the global warming have ______ our environment in the long term.

A．of

B．with

C．for

D．on

题型：不详难度：| 查看答案

The report was not concrete and in a way lacked persuasion, but _____,I felt it is fair.

A．above all

B．in others words

C．on the whole

D．on average

题型：不详难度：| 查看答案