按照要求改写句子。
1. This is my jacket. (改为一般疑问句)
_____________ _____________ your jacket?
2. That is the canteen. (改为一般疑问句)
_____________ _____________ the canteen?
3. We have lunch at school. (改为一般疑问句)
_____________ you _____________ lunch at school?
4. My pants are blue. (对画线部分提问)
_____________ _____________ are your pants?
5. It's 9: 10. (对画线部分提问)
_____________ _____________ is it?