Question

--- Are you worried when your son often plays computer games?
--- 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

Answer 1

C

根據題意我對玩電腦游戲對孩子產生影響是擔心的，玩太多的游戲對青少年有害，
故不選AB，玩電腦游戲是單數第三人稱，故用has，故選C。