题目内容：

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处语言错误，每句中最多有两处。每处错误仅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：把多余的词用斜线（\）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。

Sometimes 1 feel that living in a city makes people lonely than before. People always feel strangers cannot trusted. They think this is not normal to start talking to anyone or even smile at anyone. I desire to change that. Last week, while I was skate, a man ran by, smiling at me. He said something to me about doing sports or he hoped to be able to finishing his run. I smiled back and said that he certain would. And then a family cycles by when I was in the park. One of the girl waved at me with a big smile, and I waved back enthusiastically. I do believe such small gestures can change into the world we live in.