单项选择题
Passage 3 Questions 17 to 20 are based on the passage you have just heard.
A．English. B．French. C．American. D．Japanese.
A．More than 300 million. B．More than 350 million. C．More than 830 million. D．About 930 million.
A．The man has just arrived here. B．The man has stayed here for some time now. C．The woman will soon leave here. D．The woman wishes to stay here a while longer.