Last winter, the smog occurred a lot of time. It brought much inconvenience to our daily life or did great harm to our health. Many traffic accidents had happened just because of the smoggy weather. In addition, quite a lot of flights had to put off and a great number of people stayed at home to keep them away from the harmful air. Some people suffered of bad coughs, sore throats and other serious diseases cause by the smog.

I think whomever lives on the earth should try to play the part in the environmental protection. I support the idea that we can try to drive more and buy environmentally friendly products to improve the air quality.