题目内容：

假定英语课上老师要求同桌交换修改作文， 请你修改你同桌写的以下作文。文中共有十处语言错误， 每句中最多有两处。错误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(∧)，并在下面写出该加的词。修改：在错的词下划一横线，在该词下面写出改正后的词。

注意： 每处错误及修改均仅限一次; 只允许修改10处，多者从第11处起不计分。

This afternoon I was having a PE lesson while I fell down and hurt my foot. I was in greatly pain at that moment, but I tried to act as if nothing has happened until the class was over. Though I had difficulty walk back to my classroom, I still didn’t tell anyone but even refused the offer of help of my classmates. As result, the hurt in my foot became bad. Now I know I am wrong. We can tell others our need for help and accept his help. Some day we can help others in return for. In this way, we can get along to each other happily and peacefully.