单项选择题
M: Hello! Could I speak to Mr. Rance, please
W: Oh, sorry, he’s out at the moment.
M: Is that Mrs. Ranee
W: Yes, it is. Who is that
M: This is John.
W: Hi, John. Can I take a message for you
M: Yes, please. I’ve caught a bad cold. I’m afraid I can’t go to school today.
W: I’m sorry to hear that. You’d better go to see a doctor. And I’ll tell him as soon as he comes back.
M: Thanks a lot. Goodbye.
W: Goodbye.
A．They are boss and secretary.
B．They are teacher and student.
C．They are friends.