语法同步练习
1. I think it no use _____a lot without _______ anything.
  A. talking, doing  B. to talk, do  C. talked, doing  D. talking, being done
2. He was praised for_______ the little girl out of the river.
  A. help  B. to help  C. having helped  D. being helped
3.Susan wanted to be independent of her parents.She tried _______ alone,but she didn’t like it and moved back home.(08年湖南卷)
A.living     B.to live      C. to be living    D. having lived