Drinking too much ____your health A do harm to B is harm to C does harm to D do harmful to

问题描述:

Drinking too much ____your health A do harm to B is harm to C does harm to D do harmful to

C

答案:C
前面是动词ing形式作主语,谓语动词用三单形式,do harm to 表示“对...有害”,所以正确答案是C.