根据短文内容，判断句子正(T)误(F)。 Last summer, 15-year-old Bob had a problem, Like a lot of children. Bob was interested in doing many thing. He liked dancing most and wanted to join a dancing group. But Bob's high school didn't have a boys' dancing group but a girls' group. He tried to join the girls' group. And he made it. Bob thought his problem was over after he had been one of the dancers in the dancing group. But a bigger problem was just beginning. The school didn't allow Bob to stay in the girls' group. 'If we let Bob stay in the group,'  the school said,' other boys will want to join. Soon,  there won't be any girls in the group.' They took Bob off the group. Bob was very angry about it, so he went to a judge (法官). The judge said it not a right decision and told the school to let Bob go back to the dancing group. (     )1. Bob's favourite was singing. (     )2. It was difficult for Bob to join the school dancing group. (     )3. The school worried that nobody would watch their dance if Bob stayed in the group. (     )4. The judge thought the school's decision was necessary. (     )5. We can infer (推断) that Bob felt happy when he back to the group.