-Hi Jane. What time do you get up weekdays?-I usually get up about six o’clock.

问题补充：

---- Hi, Jane. What time do you get up weekdays?

---- I usually get up about six o’clock.

A. in; at

B. on; at

C. at; at

D. on; on

答案：

A. in; at

(答案→)B. on; at

C. at; at

D. on; on

解析：在表示时间时,in表示在一个时间范围;at表示在具体时刻;on表示在具体某一天.周末是具体某一天,六点钟是具体时刻,故选B.