求老师解答：短文改错. 短文改错. A boy who was cle

A boy who was cleaning the shoes in the street said to a young man passed by,"Let me clean your boots.
1.去掉the 2.passing
It just spends you only a penny." But the man refused.Then the boy told him that he will clean his boots for
3.costs4.would
nothing.The man agreed,and soon one of boot shone brightly.Then he put the other boot on the box, and
5.boots 6.but
the boy refused to clean it if he was paid two pence for his work.The young man refused∧pay for anything
7.unless 8.to
and went away.But the well-cleaning boot made the dirty one so bad that he could not walk on.He returned
9.well-cleaned 10.turned
back and gave the boy two pence.