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?
Poor people have it. Rich people need it. If you eat it you die. What is it?
I have a name that's not mine and no one cares about me in their prime. People cry at my sight and lie by me all day and night.
What can be drawn but never taken?
I'm tall when I'm young and short when I'm old. What am I?
No matter how little or how much you use me, you change me every month.