Answer:
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
When you take away the whole from me there is always some left.
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down, but should not be forgotten. What am I?
I am long and slim works in light. Has but one eye and an awful bite.
I flow from the Homerβs mouth when he sees doughnuts.