阅读下面的短文，根据所给首字母提示，用合适的单词填空。(10分)
Dear Peter:
I’m glad to receive your letter. Thank you for caring for the weather and my health. Now I’d like to tell you something a   the smog(雾霾)。
Since the winter last year, the smog has t place for several times. It has done great harm to our d  life. Many traffic accidents happened just because of the heavy smog weather. More and more people have to go to see the d   because of the serious disease caused by the smog. Quite a lot of flights have to be put off. A great number of people have to stay at h for fear of the poisonous air caused by smog.
People have realized the great harm caused by the smog and the importance of p
the environment. People from all over the country are taking actions to reduce the smog weather. The g  asks people to go to work or school with the public traffic, such as the bus and the u  . Also we should plant more trees.
According to me, I’ll go to school by bike or on foot, and I won’t throw the waste   a .  In addition（另外），I will tell people that all of us should protect the environment as possibly  a   we can. Would you like to tell me some good ideas? I’m looking forward to your reply.
Yours,
Wang Hua