问题

We can never expect bluer sky unless we create _ less polluted world.

A:cleaned
B:Just a minute, please
C:What can I do foryou
D:the the

正确答案是：

同类题型

16He hasn’t come yetWhat do you think__________to him?

Why not stay at hometheroad is so slippery after the heavy snow

Mr.Green teachescomputerscience.

What’s your best friend like

Most students for Jim as they thought him active and honest.