Answer:
What goes around the world and stays in a corner?
At first, I am nothing. Add something to negate. Add again to oppose. Add again to find the time to draw. Add once more to find nobody at all.
What has a big mouth, yet never speaks?
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
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?