3．建议解决办法(更换或退款)。

　　注意：1.词数100左右；

　　2．可以适当增加细节，以使行文连贯；

　　3．开头和结尾已给出，不计入总词数。

　　Dear Sir or Madam，

　　My name is Li Hua, an exchange student from China.　

　　Looking forward to your early reply.

　　Yours sincerely，

　　Li Hua

　　参考范文：

　　Dear Sir or Madam，

　　My name is Li Hua, an exchange student from China. I'm writing to complain about the quality of the computer which I purchased from your store on June 14, 2018.

　　It unexpectedly went wrong a few days after I bought it. The monitor turned out to be a black screen while I was preparing an important report. I tried to restart it according to the instructions, but it still failed to work. Therefore, I'm sure there is something wrong with the computer. I'm hoping that you direct me to a store where I may return the faulty item for a new one within the next three days. Since your store has gained a good reputation for customer satisfaction, I'm confident you will process my complaint at your earliest convenience.

　　Looking forward to your early reply.

　　Yours sincerely，

　　Li Hua