1 . 增加：在缺词处加一个漏字符号（∧）,并在此符号下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线,并在该词下面写出修改后的词。
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。

It can be seen from the picture that Mr. Liu, that wears a mask, was walking his dog. Interestingly, his dog also wears a mask.

In recent year, air pollution has become more and more serious in some areas, which have led to severe consequences. To solve this problem, firstly of all, we should raise the public awareness of protecting the environment. Secondly, the government ought punish the illegal acts of polluting the environment severe. Thirdly, we must do our best to protecting the environment in our daily life. Only in this way can human beings and animals share with a pleasant planet or live a happy life.