The key answer of exercise 3
The key to exercise solutions in chapter 2D - English in action for the textbook Roadmap A2 - Student's Book with authors Lindsay Warwick and Damian Williams from Pearson Education
Question
Listen to five phrases in the Useful phrases box. Who is more polite each time, Speaker 1 or Speaker 2? How do you know?
Answer
Speaker 2 is more polite. He uses polite intonation i.e. his voice is higher than Speaker 1's and it isn't flat like Speaker 1's. Speaker 2 sounds interested in what they say.