1. Jim has lunch at school on weekdays. (改成一般疑问句) 
                  Jim              lunch at school on weekdays?
2. The windows are opposite the door. (对划线部分提问) 
                                 the windows?
3. The sweater belong to the twins. (改成同义句)
    These sweaters              the             . 
4. There are some books on the desk. (改成否定句)
    There                            books on the desk.
5. They live on the seventh floor. (对划线部分提问) 
                               do they live on?