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

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