Could I have an early morning call six o’clock tomorrow?A. onB. toC. atD. in

问题补充：

Could I have an early morning call six o’clock tomorrow?

A. on

B. to

C. at

D. in

答案：

A. on

B. to

(答案→)C. at

D. in

解析：本题考查介词。表示钟点，用介词at，答案选C。句意：在明天早上6点钟我可以有一个电话叫醒么？