Answer:
I cannot be burned in fire or drowned in water
I stay where I am when I go off. What am I?
I must be broken before you can use me. What am I?
At night I come without being fetched, and by day I am lost without being stolen. What am I?
I am always in front of you, but yet I am never here. What am I?
I start with T end with T and within me is T.