短文改错。下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。删

Question

短文改错。
     下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
     增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。
     删除：把多余的词用斜线（\）划掉。
     修改：在错的词下划一横线，并在该词下面写上修改后的词。
     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除起）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
_______________________________________________________________________________

Answer 1

Dear manager
I'm one of your customer . The day before yesterday I bought a walkman in your shop.
                     1.  customers
Before I left I do check it carefully and everything was all right. When I got home therefore I
                   2.  did                                                                                               3. however
found a fault with it. The problem is∧ the "Play" doesn't work at all. Probably it's not your fault 
                                                  4.  that
and so is mine. Anyhow I can't solve the problem on person.
    5. nor                                                            6.  in
You see a walkman is of great useful for me to learn English and I cannot wait for too long
                                               7. use                                                         8. 去掉
before this problem is solved. Hopefully you will deal with the walkman without delay when
you accept my letter.
   9. receive
Hoping to hear of you in the earliest possible time!
                  10. from
                                                Yours sincerely
                                                Li Hua