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。
The day before yesterday, I went to the bookstore where is near our school to buy a story book. It was Saturday, so there was many people there. With the helps of a shop assistant, I quickly got the book I needed. I was about to leave when I found someone trying to steal a man's money. Although I was nervous, but I tried to think of a way to help. Suddenly, I had good idea. I stepped on the man's foot by purpose. As expected, the man's scream gives the thief a fright, who quick walked out of the shop. After hear my explanation, the man smiled and expressed her thanks to me.
