M: The office door was locked when I came back yesterday. I left something important in my office. Why didn't you answer my phone call afterwards? ,F: Maybe it was too noisy to hear it. I thought you would have the key on you.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: I really needed to get something important in my bedroom. (C) M: Oh, I called several times but nobody answered. I really wanted to get something important. (D) M: I did, so I went back to the office and locked the door.
C