I hope to call you your office at two o’clock today.A. on atB. at onC. on ofD. on to

问题补充：

I hope to call you your office at two o’clock today.

A. on, at

B. at, on

C. on, of

D. on, to

答案：

(答案→)A. on, at

B. at, on

C. on, of

D. on, to

解析：call on sb. at some place意思是：到某处看望某人。