Air pollution is one of the most important problems now. We must do something to save the air. Firstly, you can clean the road, the street. Secondly, you use recycled things which are made from rubbish or old things. Thirdly, you can use alternative energy because it is very pure and don't harm the environment. Moreover, encouraging everyone to save the environment is a good idea. If you save the environment, you save your life, too.

Chúc bn hc tốt nha=)))