—What time do you usually get up on weekends?— around eight o’clockA. OnB. InC. AtD. For

问题补充：

—What time do you usually get up on weekends?

— around eight o’clock

A. On

B. In

C. At

D. For

答案：

A. On

B. In

(答案→)C. At

D. For

解析：句意：——在周末你经常几点起床？——大约在八点钟。A. On+具体日期； B. In+年/月； C. At +钟点； D. For+时间段。在几点钟用介词at。故选C。