1. May I help you? (改为同义句)
    _____can I_____ for you?
2. Maybe he is a teacher. (改为同义句)
    He_____ _____a teacher．
3. I have looked in all the rooms in the school. (改为一般疑问句)
    _____you_____ in all the rooms in the school?
4. I'm looking for Lisa. (对划线部分提问)
    _____ _____you looking for?
5. What does the clock say? (用12:30作出回答)
    _____ _____12:30.