Answer:
You buy me to eat, but never eat me. What am I?
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?
What goes up and down, but does not move?
My voice is tender, my waist is slender and I'm often invited to play. Yet wherever I go, I must take my bow or else I have nothing to say. What am I?
I am the noise Santa's reindeers make
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.