单项选择题

On April 1st they flew to Beijing, _________they stayed several days.

A．when
B．where
C．which
D．there
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More and more trucks are seen _________between these two towns these days.
A．run
B．to run
C．be running
D．being run
单项选择题
I was too _________to say hello to my drunken father in the street.
A．embarrassed
B．embarrass
C．embarrassing
D．embarrassment
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