do harm to doing还是do

do harm to doing还是do do harm to do sth.还是 do harm to doing sth. 请问一下是do harm to do还是doing do harm to和be harmful to 后面跟to do还是doing positive doing还是to do还是do? What he said ___ harm to us.A.does B.do C.to do D.doing do harm to/does harm toMore and more people have realized that somking_______.(有害健康)do harm to 还是does harm to.为什么? dislike doing还是to do delay doing 还是TO DO plan to do 还是doing refuse to do还是doing pretend doing 还是to do refuse to do 还是doing finish + doing还是+to do? remember+doing 还是+to do to+什么 doing 还是do consider to do 还是doing swear+doing还是to do?