Answer:
My neighbor makes mistakes. I get rid of them. Who am I?
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
Bill's mom has four kids: Mary, John, and Alice. What is the name of her fourth child?
If four people can repair four bicycles in four hours, how many bicycles can eight people repair in eight hours?
What is yours but only used by others?