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。

    Last Friday, I was playing in the park while I saw a wallet on a bench. Clearly, someone has left it there by accident. I picked up and saw what was in it. I found out some money and a card with a phone number. Believing that the owner would be worrying, I immediately dialed the number. A man answered it in a anxious voice. Heard I had his wallet, he said he would come over right away. Ten minutes later, the man arrived. After making sure he was the owner, I handed the wallet back for him. With his thumbs up, he expressed his thank to me repeatedly. I felt happily that I was able to help.