题目内容
—Are you worried when your son often plays computer games?
—Yes. I think playing too many computer games ______ on teenagers.
—Yes. I think playing too many computer games ______ on teenagers.
[ ]
A. have a good effect
B. has a good effect
C. has a bad effect
D. have a bad effect
B. has a good effect
C. has a bad effect
D. have a bad effect
C
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