Answer:
Add a T and I shoot through the sky. Then add an S and I multiply. What word is it?
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What can be heard and caught but never seen?
What flares up and does a lot of good, and when it dies is just a piece of wood?
Walk on the living, they don’t even mumble, Walk on the dead, they mutter and grumble. What are they?
When is it bad luck to see a black cat?