Touchstone 3 Unit 1 Unit 2 Unit 3 (a) Unit 3 (b) Unit 4 Unit 5 (a) Unit 5 (b) Unit 6 Unit 7 (a) Unit 7 (b) Unit 7 (c) Unit 8 Unit 9 Unit 10 (a) Unit 10 (b) Unit 10 (c) Unit 10 (d) Unit 10 (e) Unit 11 (a) Unit 11 (b) Unit 12 (a) Unit 12 (b)