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.

Sentence1: Billy needed to make some money. Sentence2: He decided on Friday night he would work from home. Sentence3: Turning his computer on he realized there was a lot of work up! Sentence4: It didn't take him long to get into the swing of things.
Before he knew it, he was working his butt off and making money.