短文改错
文中共有10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（∧），并在其下面写出该加的词。
删除：把多余的词作斜线（\）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。
Today 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 worse．Now I know I was 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.