Contents 1
Exercises 1
Unit 1 1
Unit 2 7
Unit 3 12
Unit 4 17
Unit 5 22
Unit 6 26
Unit 7 31
Unit 8 36
Unit 9 40
Unit 10 46
Unit 11 50
Unit 12 54
Unit 13 60
Tapescripts 64
Unit 1 64
Unit 2 69
Unit 3 73
Unit 4 78
Unit 5 82
Unit 6 86
Unit 7 90
Unit 8 94
Unit 9 100
Unit 10 104
Unit 11 109
Unit 12 114
Unit 13 120