—Did Alice sleep well last night?—No she didn’t. She didn’t go to bed 12 o’clock last ni

问题补充：

—Did Alice sleep well last night?

—No, she didn’t. She didn’t go to bed 12 o’clock last night.

A. after

B. when

C. until

D. if

答案：

A. after

B. when

(答案→)C. until

D. if

解析：after在……之后；when当……时；until直到； if是否，如果。句意：昨晚爱丽丝睡得好吗？——不，她睡得不好。昨晚直到十二点她才去睡觉。结合语境可知选C。