Answer:
What eight letter word has "kst" in middle, in the beginning and at the end?
Brings the sky a lot closer.
What has a neck and no head, two arms but no hands?
Angels and pilots earn these.
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?