Answer:
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
Talks like this, a green wise man does. Guess my clue, you will.
I have a neck but no head. I have a body but no arm. I have a bottom but no leg.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
You must keep this thing. Its loss will affect your brothers. For once yours is lost, it will soon be lost by others.
When is it bad luck to see a black cat?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?