---We think it is wrong ______ him ______her copy the homework.  
#48512
A
of; to help
B
for; to help
C
of; helping
D
for; helping
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The MP3 _____ too much .He ____ 200 yuan _____ it .
#50441
A
spent , spent ,on
B
cost , spent , on
C
paid , paid , for
D
paid , cost , in