F: Can I speak to Mr.Black please? ,M: I'm sorry, but he is out now. ,F: Would you please tell Mr.Black to call back Mr.Lee? ,M: Sure, I will.
(A) F: You may leave the office now. (B) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) F: That's $100 in total for your food and other stuff. (D) F: Thank you for answering my call, Mr. Black.
B