阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式。

With the 【小题1】 (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 【小题2】 air pollution.

Air pollution is caused by the 【小题3】(follow ) reasons: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off poisonous gases. 25% of air pollution is caused by factories.【小题4】 reason is the smokers. Smoking not only does harm to their health 【小题5】 to others. Besides these, about 10%of air pollution 【小题6】(cause) by other reasons.

We should take some measures to fight 【小题7】 pollution. New fuel can be used 【小题8】 ( take ) the place of gas. We can plant more trees. If everybody realizes the 【小题9】 (important) of environment and does something to stop pollution, the problem will 【小题10】 (solve).