短文改错(共10小题；每小题1.5分，满分15分)
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(∧)，并在其下面写该加的词。
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。
Today I was having a PE lesson while I fell down and hurted my foot. I was in great pain at that moment, but I tried to act as if nothing had happened until the class is over. Though I had difficulty walk back to my classroom, but I still didn’t tell anyone and even refused the offer of help from my classmate. As the result, the hurt in my foot became worse. Now I know I was wrong. We can tell other our need for help and accept their help. Someday we can help him in return. In this way, we can get along with each other happy and peacefully.