Answer:
What word has kst in the middle, in the beginning, and at the end?
What comes once in a minute, twice in a moment, but never in a thousand years?
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
If eleven plus two equals one, what is nine plus five equal to?
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?