单项选择题

The people at the party were worried about Susan because no one was aware ______ she had gone.

A．where that
B．of where
C．the place where
D．the place
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单项选择题
I cook my own supper when I am in the ______ for it.
A．mind
B．mood
C．motive
D．notion
单项选择题
The oil must be used up, __ the light went out.
A．since
B．as
C．because
D．for
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