听一段材料，回答下面几个小题。
Where does the conversation take place?
A. At an airport.
B. On a plane.
C. At a duty free shop.
What does the man think of the prices of the items in the duty-free shop?
A. Very high.
B. Low.
C. A little high.
Which of the following is right?
A. The man is from the States.
B. The man has arrived in a foreign country.
C. It took him a long time to get through the Immigration