(2014·南昌第二中学高三检测)We must keep our room clean，for dirt and disease go________，you know.
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A
hand in hand
B
step by step
C
from time to time
D
one after another
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Guilin is famous ____ its beautiful hills and rivers, while Kunming is famous ____ the Spring City.
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A
for; for
B
as; as
C
as; for
D
for; as
Could I speak to the person who is ______ International Sales, please?
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A
in charge of
B
in the charge of
C
in memory of
D
in search of
Mary didn't come to our party yesterday because she was busy preparing for the exam. We all felt sorry _____ her.
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A
of
B
for
C
except
D
besides