My best friend Gina studies very hard．She often studies very late every night, sometimes _____2 a.m．
A．at B．until C．before D．to
科目：初中英語 來源： 題型：
My best friend Gina studies very hard．She often studies very late every night, sometimes _____2 a.m．
A．at B．until C．before D．to
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