Answer:
What goes through a door but never goes in and never comes out?
What word has kst in the middle, in the beginning, and at the end?
Why is leather armor best for sneaking?
What goes through towns and over hills but never moves?
I am so delicious that I require a house to contain me.
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?