______ his return from Europe , he set to work on the project..
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A
As
B
At
C
Upon
D
For
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This also keeps the air，soil，water crops________ chemicals.
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A
out of
B
out from
C
free of
D
rid of
. Michael Jordan is the greatest basketball player _________.
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A
of all times
B
of all the time
C
of all the times
D
of all time
Marie Curie paid no attention _____ the prize that she won because of her achievements in physics.
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A
to
B
of
C
about
D
from
He is determined to become a specialist ________ computer when he grows up.
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A
for
B
in
C
on
D
about
______ the dangerous situation, he was not nervous but handled it in a clever way.
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A
In search of
B
In need of
C
In face of
D
In support of