问题

There is _____ pollution in the world. Wemust stop it.

A: that, for
B:it, for
C:it, of
D: that, of

正确答案是：

同类题型

Would you please it in English

It was when searching for the lost book whose cover was missing ______ a secret letter addressed to his mother.

It took me a long time before I was able tofully appreciate what they ______ for me

Tom likes music， Tony and Mary like it _______ .

Mr Green is going to New York by plane.