Unit 1 – Unit 2 – Unit 3 – Unit 4
Unit 5 – Unit 6 – Unit 7 – Unit 8
- These exercises and tests are best viewed on computers.
- The exercises in the ‘drag and drop’ format may not work on mobile devices.
- Do the self-tests after you have finished each unit.
- Each exercise and test will open in a distraction-free mode.