A. to walk; hire    B. walking; hire    C. to walk; hired    D. walking; hired

22. Taking drugs every day will          him his life sooner or later.

      A. cost             B. spend            C. kill               D. lose

23. The author believes that it is the test system,            the teachers, that is to blame for the heavy burden of middle school students .

      A. other than        B. or rather         C. rather than        D. more than

24. I thought things would get better, but _        _ they are getting worse and worse.

      A. as it is           B. in that case       C. as it was           D. if like that

25. ---- Why did you leave without a word of warning to John?

   --- But what           otherwise? He never listens to me.

      A. could I do                              B. could I have done

      C. must 1 have done                       D. should I do

26. We believe           you have devoted yourself to is sure to come true.

      A. which            B. who             C. that               D. what

27. Among the most important questions people want __       is "How to keep the present economic growth without causing damage to the environment?"liuxuepaper.com