求一篇英语作文。急急急！！！

City Pollution Caused By Traffic
As we know,the enviroment of the earth is getting much worse.I think traffic is a big source of pollution in cities.
We must understand where the traffic pollution comes if we want to improve the quality of the air.Maybe there are some examples which could explan the idea.For example,the exhaust gas causing air pollution is one of the reasons.With the increase of the personal car.the exhaust of gas is much more than before.Also,noise pollution is one important component of the pollution.To be reserched,we will become ill if we exposed in th enviroment of noise.Else,dust pollution caused some inconvenient for our life.
What shall we do?Maybe we can change the fuel of the car and creat some new way to reduce the use of the fuel.Also,wen could advise people to drop the personal car and go to work by bus.Only in this way could we live in a clean world.