Answer:
What can fill a room but takes up no space?
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
Angels and pilots work with me.
I can be swallowed, but I can also swallow you. What am I?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic