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In view of the worsening environment, the local government is seeking advice from Professor Smith, who is an expert ______ it.
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A
within
B
for
C
on
D
beyond
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Steven’s exam results put him ________ the top ten students in his grade.
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among
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between
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in
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at
_________ a lot of troublesome affairs to deal with,our boss doesn't have any time to spend holidays.
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A
Thanks to
B
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Food prices increased ________ 10% in less than a year.
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for
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The shirt is so expensive. Can you reduce the price ________a third?
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to
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of
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It was indeed an accident, but you make it sound as if I did it______!
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A
on my own
B
by accident
C
on purpose
D
by hand