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：在错的词下画一横线，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 Allen,
How is everything going? I'd like to invite you a music festival to be held the next Sunday morning in our school hall.
The music festival would last four hours in total. It will have many excellent performances, including some traditional music pieces playing with Chinese instruments, like pipa, guzheng or erhu. In addition, some traditional Chinese dances will be performed by student. What's more important is that some famous Chinese musicians will show off to perform. Since Chinese music is something which makes you crazy, I'm sure you will have fun if you can come.
Looking forward to our coming and hoping we can see your wonderfully performances.
Yours,
Li Hua
