A、To make a complaint. B、To ask about the services. C、To rent a meeting room. D、To book a hotel room. D细节题。题干问男士打电话的原因。根据对话内容可知，

W: Good morning, Great Wall Hotel.
M: Good morning. I’d like to make a reservation for one room.
W: No problem. What’s the exact day of your arrival?
M: April 25.
W: How long will you be staying?
M: For 3 nights.
W: Your name, please?
M: Charles White.
W: OK, Mr. White. And your phone number, please.
M: It’s 55545783. By the way, what’s your check-in time?
W: 2:00 in the afternoon.
M: Great, thank you so much.
6. Why does the man make the phone call?
7. When will the man arrive at the hotel?
8. What does the man want to know at the end of the conversation?