Answer:
I have keys but no locks. I have space but no room. You can enter but canβt go outside. What am I?
What gets bigger the more you take away?
You can drop me from the tallest building and Iβll be fine, but if you drop me in water I die. What am I?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
People need me, yet they give me away every day. What am I?
What did the piece of wood say when he saw the screwdriver and screws approaching?