Answer:
I always run but never walk, often murmur, never talk, have a bed but never sleep, have a mouth but never eat. Who am I?
It moves around in circles. We see it as we turn. It keeps us always warm. Always alive and always dying, Across the sky we see it flying, But touch it and we burn.
What has a foot but no legs?
What is yours but only used by others?
What comes once in a minute, twice in a moment, but never in an hour?
When is it bad luck to see a black cat?