单项选择题
[听力原文] W: How much does it cost to send a postcard to the United States by air M: It will be $ 2.
A.In a bar. B.In a restaurant. C.In a post office. D.In a school.
A.The 14:00 flight. B.The 17:20 flight. C.The 19:30 flight. D.The 16:00 flight.
A.Type his paper. B.Perform his assignment. C.Move in here. D.Travel in another country.