Answer:
John was going to a party and, as he approached, he could see in the windows that it was completely packed with people. He went inside only to discover that there wasn’t a single person inside
I tremble at each breath of air, and yet can heaviest burdens bear.
What goes around and around the wood, but never goes into the wood?
A precious fluid, thicker than water.
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.