In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Q: Sentence1: Ben took a nap at home. Sentence2: A sound woke up him at around 2:30. Sentence3: Ben figured that it was the mailman dropping off letters. Sentence4: Ben went to the front door to check his mailbox.
A:
He opened it up to find some bills.