Clean air plays an important role in our life. However, what phenomenon we are facing is that the concentration of PM 2.5 in China is lower the commom level.
It is time for us to take some measures to cure with the problem which will destroy our body and make us ill. Every day when I go to school, many factories pour black smoke into the air. Then my mood will be bad.
Firstly, Government has the responsibility to enact relevant law and guarantee it's application in practical life. As for us, saving paper and classfing rubbish are not difficult task to accomplish.