问题

More and more people have realized that we won’t havecleaner water to drink unless something _______soon.

A: is done
B: was done
C:willbe done
D: to be done

正确答案是：

同类题型

The dictionary is being printed and it will soon _____. [ ]

I’m hungry. May I have something to eat—OK. Here’s some ________.

______ the windows ______ thepictures of different styles

Liza _ ___ well not want to go on the trip—she hates traveling.

It is raining very_______.