F: Have you heard the news? Jim's office caught fire last night. ,M: What happened? Did someone forget to cut off the electricity? ,F: I heard that someone threw a cigarette button into the garbage bin last night. ,M: That's terrible. Did anyone catch the fire before it caused a lot of damage? ,F: It was late at night, so no one was around. ,M: But there's a smoke alarm in every office, didn't it go off? ,F: I don't know. Maybe it worked, but no one heard it. Fortunately, nobody was injured in the fire, but some important papers and some computers are completely damaged.
(A) M: If the smoke alarm works well, there may not be a fire. (B) M: Although the fire was small, you should catch the fire in time. (C) M: I didn’t hear you. Please could you tell me again? (D) M: Since it happened late at night, it's normal that no one caught the fire.
D