Answer:
Three little letters. A paradox to some. The worse that it is, the better it becomes.
George, Helen, and Steve are drinking coffee. Bert, Karen, and Dave are drinking soda. Is Elizabeth drinking coffee or soda?
What's a place you have left but didn't enter?
It's in your hand though you can not feel it. Only you and time can reveal it.
who do you think you know but sometimes you don't
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright