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.
增加:在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除:把多余的词用斜线（\）划掉。
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注意:1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
When I was a child, I hoped to live in the city. I think I would be happy there. Now I am living in a city , but I miss my home in countryside. There the air is clean or the mountains are green. Unfortunately, on the development of industrialization, the environment has been polluted. Lots of studies have been shown that global warming has already become a very seriously problem. The airs we breathe in is getting dirtier and dirtier. Much rare animals are dying out . We must found ways to protect your environment. If we fail to do so , we‘ll live to regret it .
