单项选择题

So much ______ his financial position that he can't sleep at night.

A．he worries about
B．he worried about
C．did he worry about
D．does he worry about
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单项选择题
We returned school late from a party and found the door of the students' apartment ______.
A．had closed
B．close
C．to close
D．closed
单项选择题
It is a process during ______ the body releases water to cool the skin.
A．when
B．which
C．where
D．that
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