Dear Bill,

I am glad to receive your e-mail.Thank you for your caring for the weather and my health.Now I'd like to tell you something about the smog.

Up to now,the some has occurred a lot of times.It has done great harm to our daily life.Many traffic accidents happened,more and more serious diseases are caused by the smoy.Students have to stay at home and their study is affected.People have realized this and are taking measures to reduce the somg weather,such as burning less cool and using public transport. For me,I will go to school on foot,and I will try my best to protect the environment.Would you like to tell me somme good ideas? I am looking forwardto your reply.

yours,

Hua