Answer:
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
What comes once in a year twice in a week but never in a day?
I plow and plow but never sow.
People need me, yet they give me away every day. What am I?
You heard me before and then again. Afterward I die until you call me again.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?