After chatting on QQ a long time, Mary looked up, that it was 11：00 pm, long past her usual bedtime.
A. to see
B. saw
C. seeing
D. seen
网友回答
A. to see
B. saw
(答案→)C. seeing
D. seen
解析：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。