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Mr.Smith, there's a man at the front door who says he has news for you ________ vital importance.
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of
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with
C
in
D
from
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All the materials have been posted to you. I’ m looking forward to the chance to meet you __________ to discuss the present situation of our company.
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A
in peace
B
in return
C
in trouble
D
in person
  Most nurses are women, but in the higher ranks of the medical profession women are in a ________.
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scarcity
B
minority
C
minimum
D
shortage
We must show concern ______ each other.
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with
B
for
C
at
D
to
Before you pay a visit to a place of interest，look in your local library________a book about it.                                                                    (2013·安徽，22)
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on
B
at
C
for
D
to
____ my opinion, American eat too much meat.
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For
B
To
C
In
D
Upon