How do you make a sentence with revolve?

All of his problems revolve around the fact that he is too young to understand many things, and too arrogant to realize it.

He has adapted his life to revolve around her, but she does not appreciate his efforts.

Two years ago we bought a special Christmas tree stand that makes the tree revolve in place.

I was so drunk that when I lay down, the world seemed to revolve around my bed, and the motion made me nauseous.