I usually get up 7:00 the morning.A. in; atB. at; inC. in; inD. at; on

问题补充：

I usually get up 7:00 the morning.

A. in; at

B. at; in

C. in; in

D. at; on

答案：

A. in; at

(答案→)B. at; in

C. in; in

D. at; on

解析：考查介词的使用。在时间点前用at；在morning 前用in。故选B。