We plan to have a meeting the afternoon October 10th.A. in ofB. on inC. on ofD. in a

问题补充：

We plan to have a meeting the afternoon October 10th.

A. in, of

B. on, in

C. on, of

D. in, at

答案：

A. in, of

B. on, in

(答案→)C. on, of

D. in, at

解析：在具体一天的下午，用介词on，在某一天的上午，用名词所有格，故选C