单项选择题
A．Doctor and patient. B．Husband and wife. C．Hotel receptionist and guest. D．Manager and secretary.
A．Thank you very much. B．You can do it if you like. C．You’d better not. D．I’m looking for a gift for my father.
A．Yes, speaking. B．No, it is not. C．I am fine, thank you. D．Yes, I know.