That is his book ___ the lost and found case. 
#49158
A
on
B
in
C
for
D
at
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Mary sits _________ the classroom and I sit _________ her.
#46294
A
in the front of, in the front of
B
in front of, in front of
C
in the front of, in front of
D
in front of, in the front of
Jiefangbei looks more beautiful in the evening ______ all the lights ______.
#50426
A
with, open
B
when, are opened
C
with, on
D
when, turning open