Unit 13 The world's population 1
Unit 14 Shopping 8
Unit 15 A doctor for animals 15
Unit 16 The football match 23
Unit 17 The missing necklace 31
Unit 18 Mainly revision 39
Model Test 1 47
Model Test 2 57
Model Test 3 68
Model Test 4 77
Model Test 5 86
Model Test 6 94
Tapescripts and keys 103