A girl once got straight A+ grades and was given a gift by her teacher. "This is a special gift. If you're thirsty, it can quench your thirst. If you're hungry, it can still be beneficial. If you're cold, burn it and feel the warmth." What was the gift?

What cheese is made backwards?

As a stone inside a tree, I'll help your words outlive thee. But if you push me as I stand, the more I move the less I am.

What is greater than god, more evil than the devil. The poor have it, while the Rich need it. If you eat it you die!

I am stronger than an individual mare, and I am the same from the front or the rear. What am I?

What's a box with seven holes?

I clear the name of guilty men and mixed with common items I am deadly. What am I?