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    When Jim was young, he liked watches very much. When he was 18 years old, he joined the army, and after a year, he began to teach himself to mend watches. A lot of his friends brought him their watches with problems and asked for mending. Jim was always glad to help.

    Jim's captain(土校) heard about this, and one day he brought Jim a watch and said, "My watch doesn't work, can you mend it for me?" "Yes, sir. I can. " Jim answered. A few days later, he brought the watch back to the captain. "How much shall I pay?" the captain asked. "Nothing, sir." Jim said. He took out a small box and gave it to the captain and said, "In the box are three wheels from your watch, I couldn't find any places for them when I put everything back."