. I don’t know if she’s coming.A．at certainB．for certainC．with certainD

题型：不详难度：来源：

. I don’t know if she’s coming.

A．at certain

B．for certain

C．with certain

D．on certain

答案

解析

词义辨析题。for certain “肯定、确定”句意：我不能肯定她是否会来。

举一反三

We were running out of gas. I went off ____ a service station where I could buy some gas.

A．in danger of

B．in need of

C．in search of

D．in return for

题型：不详难度：| 查看答案

We should consider what use can be made ______ such a material(材料).

A．of

B．from

C．up

D．in

题型：不详难度：| 查看答案

---Why did the teacher get angry? --- __________ what we had done the day before.

A．Because

B．Since

C．As

D．Because of

题型：不详难度：| 查看答案

I have offered to paint the house ____ a week’s accommodation.

A．in exchange for

B．with regard to

C．by means of

D．in place of

题型：不详难度：| 查看答案

--Tom is very stupid. He fails in every exam.
--_____, he is more lazy than stupid.

A．On the other hand	B．On one condition
C．In my opinion	D．In other words

题型：不详难度：| 查看答案