Answer:
Goes over all the hills and hollows, Bites hard, but never swallows.
I move without wings, between silken strings. I leave as you find my substance behind. What am I?
I am an activity dogs are very good at when a ball is thrown.
I shoot but never kills
I am an English word with three consecutive double letters. What am I?
I flow from the Homerβs mouth when he sees doughnuts.