题目内容：

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。

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.每句只有一处错。

Nowadays, a lot of people are unwilling to help others. However, Liu Fang acted different. Last Sunday afternoon, on her way back school, Liu Fang came across an old man lie on the ground, seriously hurt in the leg. She immediately stopped, calling 120 and gave first aid. Soon, the ambulance came and took the man to hospital. When anything was OK, she left for school. Such is Liu Fang, the helpful person. Thought there might be misunderstanding or even trouble when we help others, but yet I strongly believe that she has done the right thing. As responsible citizens, it is our duty to help people in needs. Also, if you don’t offer your help when others are in trouble, what can you expect help from others when you were in trouble?