问题

We are confident that the environment ________ by ourfurther efforts to reduce pollution.

A:improves
B:will be improved
C:hasimproved
D:was improved

正确答案是：

同类题型

It wasn’t such a good present my cousin had promised me

________ I’ve got my own car, I don’t get as much exercise as I used to

I will call you ______ I get the ticket to the cinema.—It is very kind of you.

e call, tell them I’m in conference

35 It’s reported in today’s newspaper thatstreet _____ took place last midnight on the border of Israel and Palestine