Answer:
What can fill a room but takes up no space?
I am an odd number. Take away a letter and I become even. What number am I?
I am free the first time and the second time, but the third time is going to cost you money. What am I?
I am an odd number. Take away one letter and I become even. What number am I?
If you drop me I'm sure to crack but give me a smile and I'll always smile back. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.