短文改错。
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（∧）,并在此符号下面写出该加的词。
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。
Dear manager,
I'm one of your customer. The day before yesterday I bought a walkman in your shop. Before I left,
I do check it carefully and everything was all right. When I got home, therefore, I found a fault with it.
The problem is the "Play" doesn't work at all. Probably it's not your fault and so is mine. Anyhow, I can't
solve the problem on person.
You see, a walkman is of great useful for me to learn English and I cannot wait for too long before this
problem is solved. Hopefully you will deal with the walkman without delay, when you accept my letter.
Hoping to hear of you in the earliest possible time!
Yours sincerely,
Li Hua
_____________________________________________________________________________