There are altogether eleven books on the shelf five are mine.A. on whichB. in whichC. of

问题补充：

There are altogether eleven books on the shelf, five are mine.

A. on which

B. in which

C. of which

D. from which

答案：

A. on which

B. in which

(答案→)C. of which

D. from which

解析：本题考查介词与关系代词引导的定语从句。先行词eleven books与five之间构成从属关系，因此选择C。