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 Peter,
How's it going? We don't seen each other for months. I'm writing to tell you that I am planning to go to Zhejiang University next year.
You know, I have been interesting in computer science since my childhood. I have made up my mind to studying computer science in Zhejiang University. I'd to express my sincerely gratitude to you for your help, with which allowed me to improve my English greatly. Your encouraging word promote my confidence and motivate us to work hard. I hope you have chance to come to China in the future so as we can travel around China together.
I look forward to hear from you.
Yours,
Li Hua
