Answer:
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
I have two body parts but am used to measure length. What am I?
What has a neck but no head?
I am the building with the most number of stories.
I am the beginning of the end and the end of time and space. I am essential to creation and I surround every place.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.