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―You don’t look well, what’s wrong with you, Wang Ming?
―Last night I watched the football match and didn’t go to bed ______ 12 o’clock. ( )(本题1.5分)
A. when
B. until
C. as
D. while
参考答案：（本答案仅供参考，请以官方发布为准。）
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答案: B
