单项选择题
M: A packet of envelopes, four airmail stamps and ten regular stamps, please. W: Here you are. That’ll be five dollars and twenty cents.
A. In a drugstore. B. At a bookstore. C. In the library. D. At the post office.
A. They are good friends. B. They are both interested in Chinese culture. C. They met each other before. D. They are both interested in music.
A.100. B.84. C.60. D.16.