He had enjoyed his long bike ride through Central Park. He rode his bike back to his apartment building. He went to his mailbox in the lobby. He pulled out his keys. He unlocked the mailbox. An envelope was inside. It was the gas bill. More money, he thought. He took his bike into the elevator. He got out of the elevator on the tenth floor. He went to his apartment. He dug in his pocket for his keys. Where were they? Did he leave them hanging in the mailbox? Were they still there? He parked his bike next to the door. He rushed back to the elevator. He went downstairs to the lobby. He rushed to his mailbox. Please be there, he prayed. All his keys were hanging in the mailbox. What a relief! He rushed back to the elevator. I hope my bike is still there, he thought.