题目内容
?You don't look well. What's wrong with you, Tyler?
?Last night I watched the football match and didn't go to bed ________ 12 o'clock.
A. when
B. until
C. as
D. while
答案:B
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题目内容
?You don't look well. What's wrong with you, Tyler?
?Last night I watched the football match and didn't go to bed ________ 12 o'clock.
A. when
B. until
C. as
D. while