A、The hotel website. B、The check-in time. C、The way of payment. D、The room rate. B细节题。题干问男士最后想知道信息是什么。根据对话内容可知，他想询问登记入住的时间。故选B。

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?