John was ten years old and was a very lazy (懒的)boy. He had to go to school every day. He didn't like school and didn't want to do much work. His parents were doctors. They hoped that their son would become a doctor when he grew up. But one day John said to his mother, "When I finish school, I want to be a dustman(清洁工)."
"A dustman?" his mother asked. She was very surprised. "That's not a pleasant job. Why do you want to be a dustman?"
"Because I only have to work one day a week," John answered.
"One day a week?" his mother asked. "What do you mean?"
"Well," John answered." I know that the dustman only come to our house and work on Wednesday, because I only see her on that day."