单项选择题
A．It has the largest number of customers. B．It is grateful for its employees' efforts. C．It is successful in the market place. D．It charges the least for its services.
A．tell the customers about the quality of their products B．express the company's thanks to the customers C．prove the excellent service of the company D．inform the customers of a new catalogue
A．the product can't be delivered on time B．the product is out - of - date and unsatisfactory C．the company doesn't accept the returned product D．the company can't send a new catalogue on time