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In order to meet the deadline, Professor Smith along with his assistants       the project day and night.
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A
work on
B
works at
C
is working on
D
are working on
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Chairman Mao　　　to be unforgettable in the hearts of  the Chinese people.
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A
proved
B
regarded
C
thought
D
considered
I could just see a car in the distance, but I couldn't _____ what color it was.
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A
look out
B
make out
C
get across
D
take after
It seemed as if the world was ______.
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A
at an end
B
in the end
C
at the end of
D
by the end of
French Foreign Minister Laurent Fabius on Monday ________ international support for his operation to help Mali quash Islamist rebels.
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A
called up　
B
called for
C
called out
D
called in
How can I _____ you, Mr. Green？
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A
contact
B
contact with
C
contact to
D
contact for