单项选择题

I felt so embarrassed that I couldn’t do anything but ______ there when I first met my present boss.

A. to sit
B. sitting
C. sat
D. sit
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单项选择题
These coats are different ______ size.
A. from
B. of
C. to
D. in
单项选择题
In developing countries people are ______ into big cities in great numbers.
A. breaking
B. filling
C. pouring
D. hurrying
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