A．A teacher. B．A student. C．A businessman. D．A policeman.
单项选择题7 （）
A．Selling a house. B．Inviting some friends. C．Buying a house. D．Having some food.
单项选择题6 （）
A．In a computer room. B．In a restaurant. C．In an office building. D．In a waiting room.
