题目内容

After chatting on QQ a long time, Mary looked up, ________ that it was 11：00 pm, long past her usual bedtime.
A．to seeB．saw
C．seeingD．seen
C
C 考察非谓语动词。句义：在qq上聊了很长一段时间，Mary抬起头来，发现已经是晚上11点了，这早一过了她平时睡觉的时间。本题考察的是现在分词做伴随状语，动词see与主语mary之间构成逻辑上的主动关系，故使用现在分词。
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