Mike often gets up 6:40 the morning.A. in; inB. on; onC. at; atD. at; in

问题补充：

Mike often gets up 6:40 the morning.

A. in; in

B. on; on

C. at; at

D. at; in

答案：

A. in; in

B. on; on

C. at; at

(答案→)D. at; in

解析：本题考查表示在某一确定时刻和在上午/下午/晚上时, 一些介词的应用。在几点钟常.用介词at, 在上午/下午/晚上常表达为in the morning/ afternoon/ evening。