Answer:
What word becomes shorter when you add two letters to it?
What gets bigger the more you take away?
From house to house I go, sometimes narrow, sometimes wide. Whether there's rain or snow, I always stay outside. What am I?
A man shaves several times a day, yet he still has a beard. Who is this man?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
Why did the teacher have to wear sunglasses?