Answer:
What has three ways out and just one way in?
Hands she has but does not hold. Teeth she has but does not bite. Feet she has but they are cold. Eyes she has but without sight.
Neither bought nor sold but more valuable than gold. It is built but not by hand. What is it?
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
A precious fluid, thicker than water.
When is it bad luck to see a black cat?