Answer:
What does everyone know how to open but not how to close?
What is neither inside the house nor outside the house but a necessity for any home?
What can you throw but not catch?
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
What is that over the head and under the hat?
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?