Units 1 to 6

Unit 1

Page 3 audio

Page 4 audio

Unit 2

Page 5 audio

Page 6 audio

Page 7 audio

Unit 3

Page 8 audio

Unit 4

Page 9 audio

Page 10 audio

Unit 5

Page 11 audio

Page 12 audio

Page 13 audio

Unit 6

Page 14 audio

Page 15 audio