Listenings
Unit 1 - page 17 ex. b / page 17 ex. d
Unit 2 - page 38 ex. a / page 48 ex. a / page 48 ex. c
Unit 3 - page 62 ex. b / page 62 ex. c / page 65 ex. d
Unit 4 - page 84 ex. b / page 84 ex. c / page 84 ex. d
Unit 5 - page 121 ex. b / page 121 ex. c
Unit 6 - page 136 ex. b / page 136 ex. c