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Bob started painting when he was four years old．When he was six, he was already very good at it．He 　　1　　 many beautiful and interesting pictures, and people 　　2　　 a lot of money for them．Many people said, “This boy is going to be 　　3　　 when he's a little older, and then we're going to 　　4　　 these pictures for a lot of money．Then we will get rich．”

Bob's pictures were 　　5　　 from other people's, because he never painted on the whole piece of 　　6　　．He painted on half of it, and the other half was always blank(空白的)．

“That's very special, everyone said．“Nobody else does that! ”

One day, a man bought one of Bob's 　　7　　 and then said to him, “Please 　　8　　 me this, Bob, Why do you paint on the bottom(底部)haft of your paper, but not on the top half? ”

“Because I'm 　　9　　 young and short，” Bob said， “and my brushes(画笔)can't 　　10　　 the top half．”

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