按要求改写下列句子
1. It is my first time to be on a plane, so I don't know what I should do.(改为同义句)
It is my first time to travel ________ plane, so I don't know what __________ __________.
2. "I am popular at school," he thought.(改为间接引语)
He thought __________ __________ popular at school.
3. The policeman told the boys not to play football in the street.(改为一般疑问句)
__________ the policeman __________ the boys not to play football in the street?
4. He was reading a book on the playground.(对画线部分提问)
__________ was he __________ on the playground?
5. If he has enough money, he __________ __________ __________ __________ __________(将会买一座新房子).(完成句子)