Answer:
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?
I hop around and deliver eggs at Easter.
I begin and have no end and I end all that begins. What am I?
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
I am a beverage named after a stick.
No matter how little or how much you use me, you change me every month.