Peter, Mary, Susan, Michael, Barbara, John, are riding the train to the big city. They do not know each other. The train stops at a small town. It waits there for a long time.

Peter: The train is very quiet.
Susan: What is happening?   (S + IS/AM/ARE + V1 + ING)

         is power any hasn't very it got
John: _____ ____ ____ ____ ____ ____.