单项选择题
A．The man’s wife. B．A diner. C．Salesgirl. D．A customer.
A．They are used to express feelings only. B．They are simply sounds. C．They can not be written down. D．They are mysterious.
A．a buyer will not get what he wants to B．a buyer will gain more than he loses C．a buyer will get what he pays for D．a buyer will get something useful free of charge