补全对话： 根据所给对话，从方框中选出一个能填入空白处的最佳选项。（10分） A. When and where will we meet? B. Why do you think so? C. This is Li Lei. D. What are you doing? E. Would you like to come with us? A: Hello! May I speak to David, please? B: This is David speaking. Who’s that? A: 小题1: B: Hello, Li Lei. 小题2: A: I’m doing my homework. B: I think you are learning physics. A: Yes. You’re right. 小题3: B: Because physics is your favorite subject. A: David, we want to play soccer this afternoon. 小题4: B: Yes, I’d love to. 小题5: A: We want to meet on the playground at 1:00 p. m. See you then. Bye. B: Bye-bye.