Use a comma to separate items in a list of three or more objects.
I bought lemons, sugar, and cookies at the store.
We visited Kentucky, North Carolina, and Mississippi this spring.
My dog eats sausage, biscuits, and grits.
Do not use a comma when there are only two items.
Mom baked cookies and a pie.
Use a comma between three or more items in a written list
▶Now you try it. Where would you place commas in this sentence? Bring a towel some sunscreen and a book to the beach. Did you figure out how to place commas between the list items? Good for you.