按要求完成下列各句。
1. His mother doesn't allow him to get his ears pierced.(改为被动语态)
He _____to get his ears pierced.
2. He thinks he can pass the exam.(改为否定句)
He _____think he_____ pass the exam.
3. I don't think sixteen-year-olds should be allowed to drive.(改为反意疑问句)
I don't think sixteen-year-olds should be allowed to drive, _____ ?
4. Alice is too young to go to school.(改为同义句)
Alice isn't _____to go to school.
5. Nobody can answer the question.(改为被动语态)
The question_____ answered by anybody.
