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Be polite ____ others!
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to
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at
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about
D
on
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Only four days remained ____ the exam.    
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at
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after
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before
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We can get fresh water from rain, from rivers, or from ________ the ground.
#50757
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across
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under
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over
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Every morning, he listens to English news_________ the radio.
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from
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on
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---________do you spend _English learning every day? ---For about an hour.
#50368
A
How long, in
B
How many times, on
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China is famous ______its food in the world.
#46678
A
for
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at
C
with
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in