26. The world is changing fast. I strongly believe that one will easily fall behind             . (keep)

世界变化太快。我坚信一个人会很容易落后，除非他不ff地学习。

25. You are certain to live your dream        great efforts and lay emphasis on improvements in efficiency.(condition)

你一定会梦想成真，条件是你努力并强调效率的改进。

24. Most parents encourage their children to take an active part in social events，       

       do not interfere with their studies.(provide)

大多数父母鼓励他们的孩子积极参加社会活动，只要这些活动不影响他们的学习。

23. So        that she would die before she would admit she was wrong.(proud)

她是那么的骄傲，宁死也不会承认自己错了。

22. Schools also need to provide lots of different arenas of competition            someplace where she enjoys competing.(find)

学校还应提供许多不同领域的竟争机会，这样每个女孩都能从自己喜欢的竟争中得到乐趣。

 21.                that the constant need for new clothes for them is getting to be a real headache.(grow)

正是因为我们的男孩子们正在成长，所以经常需要给他们买新衣服，这真是一件令人头痛的事。

20. During the reconstruction of the city，many modern tall buildings went up        . (tear)

在城市重建期间，许多现代化的高楼在破旧房屋被拆的地方建起。

19. By the time he was fourteen,Einstein                advanced  mathematics all by himself.(learn)

爱因斯坦到十四岁时就自学完了高等数学。

18. Hardly had he got out of the court                  a lot of questions to him.(raise)

他刚一走出法院记者们就向他提出了很多问题。

17. The head of the company promised to deal with matters of this sort                   to his office.(return)

该公司的负责人答应一回到自己的办公室就处理这类事情。