假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
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。
A boy who was cleaning the shoes in the street said to a young man passed by, “Let me clean your boots. It just spends you only a penny.” But the man refused. Then the boy told him that he will clean his boots for nothing. The man agreed, and soon one of the boot shone brightly. Then he put the other boot on the box, and the boy refused to clean it if he was paid two pence for his work. The young man refused pay anything and went away. But the wellcleaning boot made the dirty one so bad that he could not walk on. He returned back and gave the boy two pence.