问路：Where is...? / Is there a...? — 英语阅读题

Read the passage and answer the question. Tom is new in town. He wants to send a letter. He asks a policeman, "Excuse me, where is the post office?" The policeman says, "Go straight on, then turn left at the park. The post office is next to the supermarket." Tom says, "Thank you! Is there a bookshop near here, too?" The policeman says, "Yes, there is. It is behind the park. You can read books there after you send your letter." Question: Where is the post office? (Where is the post office? Please answer briefly in English.)