Answer:
I help engines spin and pants stay up. What am I?
I describe a toilet cleaner as well as one of Santa's reindeer
You use me between your head and your toes the more I work the thinner I grow.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
Who keeps the ocean clean?
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?