Do you hear my mother walking downstairs?为什么用该walking?

Do you hear my mother walking downstairs?为什么用该walking不用walk? Do you hear my mother walking downstairs?为什么用该walking? Do you hear my mother walking downstairs?为什么用walking不用walk? you shouldn't eat or drink while walking,为什么要用walking walking would you mind not walking( )my foot. PS:请写出为什么1.Which do you enjoy ____ your weekend,walking in t WALKING IN MY WAY Are You Walking 歌词 i think walking is good for my health walking为什么加ing whenever you walking pass me by 为什么不are walking?pass by是词组吗? Do not stop walking until you see the place