In the experiment the scientist kept a watchful eye________the developments and recorded every detail. 
#28275
A
in
B
at
C
for
D
on
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________, she passed the driving test.
#29028
A
In short
B
For short
C
In vain
D
In use
Millions of people gave freely_____the starving people’s appeal.
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A
in charge of
B
in case of
C
in response to
D
in favour of
Price control would gradually disappear ________ a free market.
#26138
A
in need of
B
in favor of
C
in charge of
D
in honor of