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. costs                                                                                                 4. 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.