完成句子
1. Fully ________________( 忙于)in looking after three children at home, she no longer has time to
    enjoy the various activities in the club.(occupy)
2. It is the first time that an African －American ________________( 选为)the president of the United
    States.(elect)
3. It is required that the students not use mobile phones in their school, so seldom _____________
    ___( 你会看到)them using one.(see)
4. In my opinion, life in the twenty first century is much easier than ________________( 原来). (used)
5. What great changes!It's ten years ________________(自从我离开这儿) last time.(leave)
6. The position, however, for ________________(你正申请的), is not quite a well－paid one.(apply)
7. ________________(就我而言), you should come back after you finish your study abroad.
    (concerned)
8. He is wondering ________________(要花多少能量) to raise the temperature of oil by 1℃. (take)
9. In order to improve our spoken English, we all listen to the teacher's recommendation that nobody
     ________________(不参加)the English party on weekends.(participate)
10. I don't understand why he refused to acknowledge the fact ________________(你被击败了)
      once again.(defeat)