单项选择题

There must be a(n) ______ window somewhere--I can feel cold air coming in.

A．open
B．opened
C．opening
D．open-up
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单项选择题
What ______ if I had been asked to join, I cannot tell.
A．would I have done
B．would I do
C．I would do
D．I would have done
单项选择题
The woman who lost the key hoped the finder would turn it over to ______.
A．officially anyone
B．official anyone
C．anyone official
D．anyone officially
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