Answer:
I take off my clothes when you put on your clothes. I put on my clothes when you take off your clothes. What am I?
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
I go around a yard but does not move.
I saw the dead bring forth the living. I saw the living bring forth the dead. What did I see?
No matter how little or how much you use me, you change me every month.