问题
The mountains are greener and greener and the water is clearer and clearer.—Sure. Lots of things _________ by our government every year.
A:were done
B:are done
C:have done
D:will do;
B:are done
C:have done
D:will do;
正确答案是：
同类题型
21He is very strict with others, but he is always blind _____ his own shortcomings
edn’t take an umbrella. It isn’t going torain.—Well, I don’t know. It __________ do.
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He is such a strong-willed person thatthere is nothing in the world that can _____ him.