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 Ms Zhang,
I'm writing to express my gratitude. You are the very person who gave me a hand when necessarily.
One month ago, with the College Entrance Examination at the corner, I was nervous and in low spirit. I was afraid of letting my parents down because of their average academic performance. When I was at loss, as my headteacher, so you asked me to go to your office. Instead of blame me, you comforted me. More unforgettably, you help me with my study and always inspired me. Gradually, I learned what to adjust myself and stayed calm during the College Entrance Examination.
Ms. Zhang, I'm more than grateful for what you have done for me. Wish you happiness and good healthy.
Sincerely yours,
Li Hua
