F: Today I am interviewing 16-year-old Mike about his feelings on how people can help save the environment. So, Mike. How can we save the environment? ,M: By saving water.
(A) F: I am surprised that you are an expert who is only 15 years old. (B) F: I'm glad that you can come to this interview to talk about saving environment. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Thank you. Welcome to our interview. Mike, you are just 15 years old, right?
B