1. We don't have enough money to buy a car. (同义句转换)
    We can not                         buy a car.
2. I happened to cut myself after having a dinner. (同义句转换)
    I             myself by             after having a dinner.
3. I don't want to fall behind my classmates. (同义句转换)
    I want to                         with my classmates.
4. Can you tell me how I can use the computer? (同义句转换)
    Can you tell me                         use the computer?
5. They thought of a good idea to give her. (同义句转换)
    They                         with a good idea to give her.
6. This is Kate's dictionary. (对划线部分提问) 
                             is this?
7. My mother looks unhappy today,                        ? (反意疑问句)
8. She likes the musician with lots of energy. (同义句转换)
    She likes the musician                        .
9. 在星期三以前他已经用光了所有的钱。
    He has                         all the money by Wednesday.
10. 未经允许你不要进入老师的办公室。
      You mustn't go into the teachers office                        .