下面短文中的画线部分是错误的，请改正，但不得改变原文意思。 Last summer, 15-years-old Bob had a problem. Like a lot of children. Bob was interesting in doing many things. He liked dancing most and wants to join a dancing group. But Bob's high school didn't have a boy's dancing group but a girls' group. He tried to join the girls' group. And he made it. Bob thought her problem was over after he had been one of the dancer in the dancing group. But a bigger problem was just begining. The school didn't allow Bob to stay in the girls' group. “If we let Bob to stay in the group,” the school said, “other boys will want to join. Soon, there won' have any girls in the group." They took Bob off the group. Bob was very angrily about it, so he went to a judge（法官）. The judge said it was not a right decision and told the school to let Bob go back to the dancing group.
