Answer:
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
What is it that you must give before you can keep it.
Some live in me, some live on. And some shave me to stride upon. I rarely leave my native land. Until my death I always stand. High and low I may be found. Both above and below ground.
You use it between your head and your toes, the more it works the thinner it grows.
You can hold it without using your hands or your arms. What is it?
When is it bad luck to see a black cat?