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. If I told it to my teacher or my friends, I would be better now. 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.

答案：第一句：off→down/over

第二句：greatly→gr eat; has→had

第三句：walk→walking; but→and

第四句：result前加a

第五句：told前加had

第七句：his→their

第八句：去掉not

第九句：to→with