短文改错。假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有
10处语言错误， 要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。修改：在错的词下划一横线，并在该词下面写上修改后的词。
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11处起）不记分。
Today I was having a PE lessons when 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'm wrong. We can tell others our need for help and accept his help. Some
day we can not help others in return. In this way, we can get along to each other happily
and peacefully.
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