增加：在缺词处加一个漏字符号(ʌ)，并在其下面写出该加的词。
删除：把多余的词用斜线(\)划掉。
删除：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 David,
How time flies! It's been an entirely week since you left our school. You can't imagine what I miss the time we spent together! I am very happy to be your friends and grateful to your help with my English. I really got pleasure from speak English with you, and it was the first time that I found it not difficult to learn English. Because of I have learned a lot from you, I am more confident of your future study.
Although we are not in a same country now, our friendship will last forever. And I hope it will not be long before we met again.
Yours,
Li Hua
