听短文,根据短文内容回答问题。短文读三遍。 1. Who is the letter from? A. Joy. B. Emily. C. David. D. I don't know. 2. When is the concert? A. Every Saturday night. B. On July 2 every year. C. At 8:00 every day. D. Every morning. 3. Where are they going to have the party? A. In Central Park. B. Near History Museum. C. At Uncle Paul's restaurant. D. At her home. 4. What are they going to do from 6:30 to 7:45? A. Go to a concert. B. Eat and talk. C. Go to the museum. D. Sing and dance. 5. What time does the party begin? A. At 6:30. B. At 7:45. C. At 8:00. D. At 9:00.