After chatting online for along 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：考查现在分词做状语：句意：在网上聊天很长时间后，玛丽抬头，看见是晚上11点了，超过她平常睡觉时间很长了。这里是伴随状语，因为玛丽和see是主动关系，用现在分词做伴随状语，选C。