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?