F: I don't understand the math problem on the board. Can you help me? ,M: I'm kind of busy working on my homework. Why don't you ask the teacher to help you?
(A) F: Thank you, Mr. Wang. You are indeed a responsible teacher. (B) F: Dad, please help me now. (C) F: Excuse me, could you repeat the question? (D) F: Thanks for helping, Jack. You're so nice.
C