单项选择题

I was writing in my room （） a half broke my window.

A．when
B．as
C．where
D．while

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Contracts must be renewed one week （） their expirations.

A．on
B．against
C．the moment of
D．before
单项选择题
I think Chinese is more popular than （） subject.

A．other
B．the other
C．any other
D．another
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