Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make a beautiful and efficient ppt [title] Write the outline of your ppt on papers at first, the more detailed the better. [step] Write your outline as one title one page. [title] Open ppt but don't use any templates.

Ending1: [step] Skip one, and go back and repeat these steps on the next page. Do this until you have a comprehensive draft, sometimes it works better to go back and sketch out more detailed sub-steps once more. Ending2: [title] Write about ten pages, which should be about 24 pages, depending on the type of paper you are including. [title] Write about the details of your argument, or about a key theorem. Ending3: [step] Write out or copy the content that is suitable for the titles and revise the words. Make the content of each page as a point with " project number ". Ending4: [step] Simply put ideas in them step by step. [title] Make only one outline, and some ideas in the edited script.

Answer format: ending1/ending2/ending3/ending4