______ you think you can or not, you must finish the project before Friday. A．If

题型：不详难度：来源：

______ you think you can or not, you must finish the project before Friday.

A．If

B．Unless

C．Though

D．Whether

答案

解析

略

举一反三

The world economy has improved _____ since the end of last year, but major problems and challenges are not fully solved.

A．somehow

B．somewhat

C．anyhow

D．meanwhile

题型：不详难度：| 查看答案

This dictionary, a few pages __________ are missing, is of no use.

A．to which

B．in which

C．of which

D．among which

题型：不详难度：| 查看答案

It has been many years since I was last in London, _______ I still remember something that happened during that visit.

A．and

B．for

C．but

D．as

题型：不详难度：| 查看答案

Should the wallet, found in the street, be put into a pocket _______ turned over to the policeman?

A．and

B．or

C．then

D．but

题型：不详难度：| 查看答案

She rubs her teeth with her finger _______ she wants to brush her teeth. This is done after every meal.

A．when

B．until

C．since

D．while

题型：不详难度：| 查看答案