1. He is going to visit her uncle next week. (提问)
    ______ ______ he going to visit her uncle?
2. The boys were playing when I got there. (一般疑问句)
    _______ the boys _______ when I got there?
3. Will you take the train to work? (改同义句)
    Will you go to work ______ ______?
4. He didn't go to bed before ten o'clock. (改同义句)
    He ______ go to bed ______ ten o'clock.
5. "How old are you?" Jack asked her. (改为间接引语)
     Jack asked her how old _______ _______.
6. They will go to Beijing on vacation next week. They will have enough time. (合并)
    They will go to Beijing on vacation next week ______ they ______ enough time.
7. The boy was riding a bike when the UFO landed? (提问) 
                             the boy             when the UFO landed?