Answer
From top to bottom
Correct
Incorrect
Correct
Incorrect
Incorrect
Correct
Explanation
Commas are used when listing 3 or more things and when adding details to something (like saying "Jennie, my little sister" or "Tom and Brent, my best friends").
It's based on a boy the author saw during her day out with her child
John should make sure he trains the workers better, including how to fix the machine.
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