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。

Dear Sir/Madam,

I am Li Hua, an exchange student from China. I am writing to ask you to help to look for the Chinese student.

Yesterday, my roommate Tony was on the way to the classroom when he fall down and could hardly move. Just at that moment, when a Chinese girl came to him. She gave him first aid (急救) but called an ambulance. Because the kind girl, Tony was sent to hospital in time. But the girl left quietly after Tony could express his thanks. The girl is about eighteenth years old and middle-sized. Tony real wants to meet her to express her sincere appreciation. Could you please help to find her?

I am looking forward to hear from you.

Yours,

Li Hua