Answer:
You cannot keep me until you have given me. What am I?
Travel a mile and I will change, travel a million and I will end as I started. What am I?
There is one in every corner and two in every room.
I have feathers that help me fly; with head and body but I'm not alive. Very skinny and a fixed length how far I go depends on your strength.
I pass before the sun, yet make no shadow. I'm all around you, but you cannot see me. What am I?
I flow from the Homerβs mouth when he sees doughnuts.