F: Are you staying by yourself again this summer vacation? ,M: No, I'm not. My brother and sister are staying with me right now. ,F: Really? What are they doing this summer? ,M: Well, my brother is on vacation now. He always wants to come and visit the city.
(A) F: So he is here in the city to study, isn't he? (B) F: So he is here in the city to study, isn't he? (C) F: Why is your brother here in winter? (D) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please?
D