Answer:
What is it that after you take away the whole, some still remains?
In many hallways you would stand, if not with this in hand.
There are four of these, but everyone's favorite seems to be spades.
What starts with the letter T, is filled with T and ends in T?
We are two brothers on opposite sides of the road, but we never see each other. Who are we?
What is always coming but never arrives?