M: I wish I had an electronic dictionary, too. It's really inconvenient to use the paper dictionary. ,F: Would it make things go faster if you borrow mine?
(A) M: It's so nice of you to show me how to use the dictionary. (B) M: Excuse me, could you repeat the question? (C) M: Thank you so much. It's so nice that I can use your electronic dictionary. (D) M: It's so nice of you. I'm sure you will work more efficiently with my electronic dictionary.
C