F: Sam, I can't go to the library with you today. ,M: What's wrong, Maria? ,F: My brother is taking off to Shanghai and I have to drive him to the airport.
(A) M: It's so nice of you to see your brother off. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I'm sorry to hear that your brother is going to see a doctor today. I hope he's alright. (D) M: Great, glad that you don't have any plans for today. Let's go to the library together.
A