Instructions: In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.
Input: Title: Aerobics Class. Sentence 1: Tanya wasn't too sure about this. Sentence 2: She had signed up for the aerobics class but was now nervous. Sentence 3: All the other people in the room looked so fit. Sentence 4: She tentatively began the aerobics class.
Output:
Before she knew it she was having a blast.