Chapter 6, Exercise 1 Chapter 6, Exercise 3 Chapter 6, Exercise 13 Chapter 6, Exercise 17 Chapter 6, Exercise 19 Chapter 6, Exercise 20 Chapter 6, Exercise 21 Chapter 6, Exercise 22 Chapter 6, Exercise 27 Chapter 6, Exercise 28 Chapter 6, Exercise 30 (a) Chapter 6, Exercise 30 (b) Chapter 6, Exercise 30 (c) Chapter 6, Vocabulary, Phrases Chapter 6, Vocabulary, Words