Answer:
What can't you see, hear or feel, until it’s too late. What shadows love, and shopkeepers hate?
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
You are on an electric train. Which direction will the smoke fly in?
What comes one time in today, three times in tomorrow and never in the future?
It's what light turns into in the night
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?