Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

Câu hỏi

Mai has just finished her report about saving energy in front of the class.
Khang: “What an excellent presentation!”
~ Mai: “________”

A. No problem

B. Not at all

C. Of course not, it’s not costly

D. It’s nice of you to say so

Mai has just finished her report about saving energy in front of the class.Khang: “What an excellent presentation!”~ Mai: “________”