Explaining to a friend how to find his apartment, he said, "Come up to the fifth floor and ring the doorbell with your elbow（,） .
At the track on his 55th birthday, he was surprised to find a horse named Numero Cinco running in the fifth race.
B: You can get off at the fifth stop.
On the fifth night we passed St Louis, andwe decided to go on down to Cairo in Illinois,sellthe raft there and get a boat to Ohio.
