听对话,选择问题的正确答案。 1. At what time does the post office open? [ ] A. 7:45 B. 8:00 C. 8:15 2. What day is it today? [ ] A. Monday B. Tuesday C. Wednesday 3. Which box is the heavier of the two? [ ] A. The white one. B. The black one. C. The brown one. 4. How much does the beef cost? [ ] A. 12 yuan. B. 24 yuan. C. 6 yuan. 5. Who has the most sweets? [ ] A. Daniel. B. Simon. C. Peter. 6. How did Lily go to school this morning? [ ] A. By bus. B. By bike. C. On foot.