问题
Air_______ is one of the biggest problems in the world today- Yes. We must take action to make the air less_______.
A:pollution; pollution
B:pollute; pollution
C:pollution; pollute
D:pollution; polluted;
B:pollute; pollution
C:pollution; pollute
D:pollution; polluted;
正确答案是：
同类题型
een working all day, but I feel as if I _______ nothing.
Who will be ___________ the company when the manager (经理) is out
The story took place in Europe in the days before automobiles _____everyone used horses. [ ]
Hurry up, Jack. We have to get to the station before 11:45 we can catch the 12:00 train.
___________ ability and experience, he can’t be compared with you