Answer:
Never resting, never still. Moving silently from hill to hill. It does not walk, run or trot. All is cool where it is not. What is it?
When it comes to me, you go on red and stop on green. What am I?
What is always in front of you but can't be seen?
What begins with T ends with T and has T in it?
I go inside boots and outside shoes.
When is it bad luck to see a black cat?