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(＼)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。
It was raining when I went home from school yesterday. I see an old man walking difficultly in the rain without a umbrella. I went up to him and offered to share my umbrella with him. He was very surprising and said "Thank you." When I tried to hold the umbrella to him, I found that she was very tall. I was too short hold the umbrella highly enough. Just when I was wondering what to do, and he took the umbrella. Several minute after we got to the bus stop, his bus came and he got on it. He again thanked me for that I had done. I went home happily.
