假定英语课上老师要求同桌之间交换修改作文，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：在缺词处加一个漏词符号(/\)，并在其下面写出该加的词。
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。
As the saying goes, many little drop of water make an ocean. A small action may lead to major changes took place in society. My friends and I had participated in a voluntary activity at a nursing home last week. We first did some cleaning or washing. After that we spent half an hour chatted with the old people living there. Though it was a tired day, we were happy with that we did. I felt a sense of responsibility by visiting the old. If all of us lend a helping hand to the people in need, they can live in harmony with each other. A society is just as a family. If we are willing to help others, our small actions can make big difference.
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