Here is your English task. Let's see how well you do with commas.
There are many ways that we can use commas. We can use commas to separate items in a list. There should be a comma between each thing in a list except the last two. These are separated with ‘and’ or ‘or’ like this… I donated three films, two books, some old clothes and a really difficult puzzle.
Commas are also used after fronted adverbials like this: On my birthday, we went out for lunch. They show where, when or how something happens.