— When did you go to bed last night? — I finished my homework. A. UntilB. Not untilC. Wh

问题补充：

— When did you go to bed last night?

— I finished my homework.

A. Until

B. Not until

C. When

D. While

答案：

A. Until

(答案→)B. Not until

C. When

D. While

解析：not …until 表示直到…才，与短暂性动词连用，故选B