Answer:
There are several different kinds, but the one you pick doesn't do its job. What is it?
What has one eye but cannot see?
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
What letter comes next: O T T F F S S ?
I build up castles. I tear down mountains. I make some men blind. I help others to see.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?