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。文中共用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。

Last Friday, I rode on my bike home. At a crossing, I accidentally knock an old man off his bike. I hurried over and found his leg was injured. Nervous and worrying, I called my mom and told her that had happened. We took the old man to the hospital at once. The doctor gave him careful examination. To our delight, there was nothing serious wrong with him.

Then, we went back to where the bike was parked. For our disappointment, the bike didn’t work. I immediately got it fixed. The old man got on my bike and we waved goodbye to each other.

The accidents made me realize that we should be careful to avoid get into accidents, but once they occur, we should take responsibility.