题目内容：

假定英语课上老师要求同桌之间交换修改作文，请你修改你同旧式写的以下作文。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。

Yesterday I bought new coat in a shop. When I came back home, I found

it so big for me . This morning, I went to the shop and change the coat I bought. But the sales girl in the shop treated me cold.  Firstly, she didn’t admit why I bought the coat in her shop. Then, she said I made it be dirty . So I got very angry but quarreled with him, pointing to the rules on the wall.  Just then, a manager turned up. He said sorry to me and they changed other one for me . At last, I said goodbye to them and took the new coat home.