问题

What are you going to do this weekend — Well, we’ll clean up the city parks ________ it rains..

A:if
B:that
C:while
D:unless;

正确答案是：

同类题型

下列各句中，没有语病的一句是

I thought you wouldn’t mind.—-Well, as a matter of fact I don’t, but you _____ me first.

do you know about Mike__Well,hegot married and____________in Australia

re teenagers watch actors smoking infilms, the more ______ they are to take up the habit of smoking themselves.

He should________his attention________the main problems.[ ]