2019年mpa考试英语真题——非谓语动词304

{01}The ________ air has caused a lot of chemical rain to appear in this area constantly.
A.pullution
B.polluted
C.polluting
D.pollute
解析：
本题选B。

{02}They need ________ the walls of the zoo, that is, the walls of the zoo need ________.
A.to repair; to repair
B.to repair; repairing
C.repairing; to repair
D.repairing; repairs
解析：
本题选B。