The “Index” button will direct you to the contents of a Unit. In some tasks, the “arrow” button next to the “Index” button will enable you to jump to further points or questions within a task.
JCloze introd.
Gap-fill exercise
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!