1. Have you looked in the classroom? (做肯定回答)
    ______, I ______.
2. Jenny is at the computer. (就划线部分提问)
    ______ ______ Jenny?
3. It's a quarter after three. (改为同义句)
    It's a ______ ______ ______.
4. His father has been to America. (就划线部分提问)
    ______ ______ his father ______?
5. She has finished her homework. (改为一般疑问句)
    ______ she ______ her homework?