Logic Riddles

Question: A man is trapped in a room. In the room their is a table, chair, 2 doors, and a small hole in the ceiling 12 inches in diameter. Behind one of the doors is an extremely hungry lion that hasn't eaten in a couple of days. Behind the other door is a glass tunnel that magnifies the sun creating temperatures so high that even opening the door could kill you.

How does the man escape?

Question: What are the next two letters in the following series and why? WATNTLITFS__

Question: What goes through towns and over hills, but never moves?

Question: Your friend tells you about a story he once tried to impress a young lady with, but instead got a slap in the face. He wants you to attempt to see the flaw: It was a hot and windless day, in our bunker, when suddenly one of ours yelled: "Enemy!" We opened fire on them, leaving one hundred of them dead before they retreated. I was checking a dead captain's glasses when the shout came that they were incoming again, and the CO ordered us to open up on them with our mortars, when I yelled: "Cease fire! They're Americans!" Later, an American colonel thanked me for my work after I said that I saw their flag, waving back and forth in the wind. What is wrong with this story?

Question: what did the postman say to the mailbox?