听下面一段材料,回答第1至第3小题。 1. How were Mr Wang's classes? A. Boring. B. Bad. C. Interesting. 2. Which of the following is NOT talked about in the passage? A. Mr Wang visited his students' home. B. Mr Wang bought useful books for his students. C. Mr Wang asked his students to listen carefully in class. 3. What did Mr Wang promise to do in the last class? A. To see his students soon. B. To stay with his students. C. To play with his students.