问题补充:
With our knowledge practice, we can make contributions to our society.
A. to base on
B. basing on
C. based on
D. base on
答案:
A. to base on
B. basing on
(答案→)C. based on
D. base on
解析:考查非谓语动词作后置定语。our knowledge和base on之间是动宾关系,base sth on sth,要用过去分词based on。选C。