M: Would it be alright if I leave the room for a moment? I have to make a phone call. ,F: I'd rather you didn't if you don't mind. You see, this is a very important part of lesson.
(A) M: I'll make a phone call quickly as the lesson is not that important. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I am making a phone call here. Do you mind turning down your voice? (D) M: I am cleaning the room here. The lesson hasn't start yet.
B