—When did your daughter go to sleep last night?—She didn’t go to bed she finished her hom

问题补充：

—When did your daughter go to sleep last night?

—She didn’t go to bed she finished her homework.

A. before

B. after

C. until

D. then

答案：

A. before

B. after

(答案→)C. until

D. then

解析：句意：——昨晚你的女儿什么时候去睡觉？——她直到做完家庭作业才上床睡觉。A. before在……之前； B. after在……之后； C. until 直到； D. then然后。not……until……直到……才……故选C。