题目内容：

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

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．只允许修改10处，多者(从第11处起)不计分。

Yesterday，I saw the old lady fall down when I was hurrying to school．I was about to help her up while suddenly a passer-by stop me，saying that I might be accused of knocking him down．Heard his words，I began to hesitate and slowed down my step．At the same time，another student，who saw everything，went up to help．The old lady said nothing but lots of thanks to the good boy．I felt ashamed．As is know to all，helping others are forever a good virtue．Even some old people are becoming immoral（不道德的），we can't let it to disappear．