Please choose the correct ending to complete the given sentence: Youth: [header] How to create a " cheat sheet " (allowed reference sheet ) [title] Revise all the topics to be covered in the exam/test. [step] Don't try to rely completely on " cheat sheets " as they will hinder you from actually remembering anything. Instead, revise everything first, as if you couldn't use a cheat sheet.

Ending1: [title] Identify key things to put into cheat sheets. [step] Some of these are: equations, diagrams, definitions, conversions, concepts and other hard-to-memorise facts. Ending2: [title] Make any changes you want to make to the exam/test you plan to study. [step] Make sure you know it before you write any notes as you don't want to lose what you've looked at. Ending3: [title] Outline the test, underline important points and make sure that each points are written honestly. [step] If you do this, you will be in far too much detail and will be disqualified. Ending4: [title] Lay a sheet of lined paper across your desk. [step] Look for the center hole in the page by sliding it towards you.

Answer format: ending1/ending2/ending3/ending4