Teenagers their health because they play puter games too much.
A. have damaged
B. are damaging
C. damaged
D. will damage
网友回答
A. have damaged
(答案→)B. are damaging
C. damaged
D. will damage
解析：考查现在进行时态的用法。从句子后面的时态because they play puter games too much”可以看出，是“现在一直在做的动作”。