1 . The air is __________(污染) so badly in some regions that people could hardly breathe.

2 . The river was so __________ (污染) that it actually caught fire and burned.

3 . The police have warned the inhabitants not to bathe in the p__________   river.

4 . Don’t drink ________(污染的) water because it can cause many disease.

5 . Because of _______(工业的) reasons, the beautiful place was _________(受到污染的).

6 . Don’t drink ________ (pollute) water, because it carries the virus.

7 . There is no waste, no _____and no environmental damage.

A．pollute

B．polluting

C．polluted

D．pollution

8 . The doctor held the belief that the ___________ (污染) air led to the spread of the disease. （根据汉语提示单词拼写）

9 . The scientist _________(怀疑) that the__________(污染) water was to blame for the illness.（根据汉语提示填空）

10 . The __________ (pollute) river is getting cleaner and you can find some fish in it. (所给词的适当形式填空）