问题

There are some warnings in some countries ______ over exploitation of underground water has caused the decline of wetland and increase of desertification.

A:which
B:where
C:what
D:that

正确答案是：

同类题型

Itriedtopersuademyhusbandtogiveupsmokingbut________.[ ]

These oranges taste________.

I think you should complain—, of course, you are happy with the way things are

Shall we go to Shanghai by plane ——_____

What do you think of Sam, the newcomer? —Well, he talks as if he ________ everything.