John's fingers _____(hurt hurts hurting )

John's fingers _____(hurt hurts hurting ) My finger ____.A.is hurt B.hurt C.is hurting D.hurts My nose______.A.hurt B.hurts C.is hurting选哪一个?为什么? my leg hurts为什么hurt加s my head hurts hurt为什么加s it's hurt/it hurts的区别 hurting中hurt 什么词性 I cut my knee.It hurts.hurt为什么加s My nose hurts.为什么hurt要加s I think my arm hurts 中的HURT为什么加S my leg hurts .这里的hurt为什么要加s My hand hurts.为什么hurt要加s.而My arms hurt.为什么hurt不用加s.