完形填空阅读下面短文, 掌握其大意, 然后从各题所给的四个选项(A、B、C和D)中, 选出最佳选项. Tom is four years old now. His father works in a middle school and __1__ P. E. there. His mother works in a shop and his grandma looks after him __2__. The boy is clever and always __3__ that he knows more than his little friends do. One morning Tom's father __4__ earlier. The school in which he works was going to hold a sports meeting that day. Of course he was going to be __5__ than any other teacher in his school. About two hours later Tom's grandma __6__ sick. Her head hurt but she couldn't go to see a __7__ by herself. She called her son, but __8__ answered. So she asked the little boy to go to tell his father about it. As soon as Tom went out, he __9__ his friend Henry. And he asked him to go there with him. The boys wanted to watch the sports meeting and they __10__ went there happily. When the got to the school, there were a lot of people on the __11__ and the boys' 400-metre relay race __12__. They stopped to watch it. And Tom __13__ what his grandma told him to do. They were attracted by the race. Henry asked, "Why is the front boy running so fast " Of course Tom didn't know about it. He __14__ for a minute and said, "What a fool(傻瓜)! Don't you see the other boys with __15__ in their hands are running after him "

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