单项选择题
A．She wrote it last semester. B．She’ll finish it in a few minutes. C．She never does assignments early. D．She isn’t going to write it.
A．It becomes smaller and works faster. B．It becomes larger and works faster. C．It works as larger and works slower. D．It becomes smaller and works slower.
A．Air hostess and passenger. B．Bank clerk and customer. C．Waiter and customer. D．Salesman and customer.