听下面一段对话，回答第1-3题。 1. Why does the man want to borrow the woman's notes? A. He raised the classes. B. He is not satisfied with his notes. C. He has not taken any notes in class. 2. When does the man feel sleepy? A. On his way to class. B. At the beginning of the class. C. Thirty minutes after class begins. 3. Where will the speakers go? A. To the library. B. To the cafeteria. C. To the supermarket.