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.