M: Can I help you? Are you looking for something? ,F: No, I have not lost anything, but I am not sure of the way.
(A) M: It's okay. People always make mistakes. You're intelligent enough to not get lost in this complex building. (B) M: I'm so glad that you didn't lost in this complex building. (C) M: I didn’t hear you. Please could you tell me again? (D) M: I guess you're lost. Maybe I can help you to find the right place.
D