增加：在缺词处加一个漏词符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下画一横线，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。
Yesterday afternoon my friends, Xiao Ming, and I went skating on the lake. As soon as we got here, we began to skate happily. Suddenly, I noticed something usual. The moment I warned Xiao Ming to take care of, the ice broke but he slipped into the water. I had no choice but cry for help. After hearing my cry, a young man rushed over, jumped into the lake and tried my best to swim towards Xiao Ming, that was struggling in the cold water. At last, Xiao Ming was saved but the young man left without say anything. We were all deeply moved by what he have done.
