听下面一段对话，完成五道小题，每小题仅填写一个词。这段对话你将听两遍。
Where did the man buy the MP3?
A. On the Internet.
B. In a supermarket.
C. In a shop.
Where does the conversation most probably take place?
A. In a hotel.B. At home. C. In a library.
Where are they talking now?
A. At a hotel.B. At an airport.C. In a bookstore.
Where is the common room?
A. Opposite the kitchen.
B. At the end of the corridor.
C. Near Yellowstone Park.
Where does the conversation probably take place?
A. At home. B. At a bus stop. C. At an office.