The doctor must have sat up all night with his patient, you see, he looks tired and sleep

发布时间：2020-08-16 10:37:45

The doctor must have sat up all night with his patient,      you see, he looks tired and sleepy.
A. as
B. which
C. for
D. because

网友回答

A. as
B. which
(答案→)C. for
D. because
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