We offered him our congratulations_____his passing the college entrance exams. 
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A
at
B
on
C
for
D
of
推荐题目
Whoever helps the poor, I’ ll be______ him/her. 
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A
in place of
B
in favor of
C
in common with
D
in search of
 I think teachers should be strict _______ their students ______ studies.
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A
in; with
B
with; in
C
about; in
D
with; for
 It was reported that many helicopters were sent there _________the missing passengers.
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A
in search of
B
in need of
C
in charge of
D
in time of