听对话,回答问题。 1. How long can you keep the books you borrowed from the library? A. 3 days. B. 4 days. C. 5 days. 2. How many times does the library open every day? A. Once. B. Twice. C. Three times. 3. What is the man doing? A. Leading a conversation. B. Making an introduction. C. Telling a news story.