Answer:
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.
It is a path of cow juice spread across the sky but cannot be seen by the naked eye
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
I have a tongue, but do not talk. I follow close, but neither run nor walk. Coupled and hitched, but never married. You couldn't bear the load I've carried.
What can answer in any language? What can speak without a mouth? What can sing without an ear?
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?