(2013·山东,26)Mark needs to learn Chinese________his company is opening a branch in Beijing.
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A
unless
B
until
C
although
D
since
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 ________, he has finished his job ahead of time.
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A
As is expected
B
Which is expected
C
It is expected
D
It is as expected
There were two small rooms in the house, _____ served as a kitchen. 
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A
the smaller one of which
B
the small one
C
the smaller of them
D
and the smaller one of which