单项选择题
M: Would you like to see a menu W: No, thank you. I already know what I want to order.
A.Patient and doctor. B.Waiter and customer. C.Wife and husband. D.Secretary and boss.
A.The bookstore. B.The Great Wall. C.The hotel. D.The travel agency.
A.Handbags. B.Flowers. C.Black flowers. D.Both the black and the white flowers.