F: Did you remember to bring the book you promised me? ,M: I'm sorry. It's completely slipped my mind. I'll bring it tomorrow.
(A) F: It doesn't matter to lose that book. You haven't promised to give it to me. (B) F: You're so happy. I suppose you brought the wrong book on purpose. (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: That's all right. Just bring me the book tomorrow. Please don't forget.
D