Answer:
I must be broken before you can use me.
I fill a room but take no space.
Walk on the living, they donβt even mumble. Walk on the dead, they mutter and grumble. What are they?
I am the book one can never finish reading
What is easy to get into but hard to get out of?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?