The teacher asked the students to do the experiment __________ small groups.
#25445
A
to
B
for
C
on
D
in
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His money had not brought happiness and perhaps it had contributed________ his strange sense of values.
#27550
A
up
B
for
C
as
D
to
I have offered to paint the house ____ a week’s accommodation.
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A
in exchange for
B
with regard to
C
by means of
D
in place of