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.
Q: Title: Wallet misplacement. Sentence 1: Peter went to the grocery store one day. Sentence 2: He picked up fruits and vegetables. Sentence 3: He went to pay at the cashier's desk but he forgot his wallet. Sentence 4: He spent 5 minutes searching, but could not find it.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
He had to put everything back and come back to the store later.