F: I've lost my key and I don't have a spare one. ,M: Never mind. I have a friend who is a specialist in opening locked doors without keys. I'll telephone him to come here at once.
(A) F: Could you please find the key for me? (B) F: I didn’t hear you. Please could you tell me again? (C) F: I didn't ask your friend to help me. (D) F: You are such a life saver, please kindly ask your friend to help me open this gate as soon as possible.
D