You need to check each sentence for errors. If there's an extra letter, such as the "s" in "reads" (#1) you need to use the symbol which deletes a letter. If a sentence/word is missing a word/letter... you need to use a symbol to show that a word/letter should be shown there.
1 -went
2- started
3- played
4- are going
5-
Explanation: sorry look it up?
Yes, because you can include a lot of different meanings in one piece and you can have it anywhere and with anyone at any time.