Answer:
What binds two people yet touches only one?
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
What is long and slim, works in light. Has but one eye, and an awful bite?
What goes around the world and stays in a corner?
I am the kind of an ant that's good at math. What am I?