Take another look at the sentence:

Syed finally decided to clean out his disorganized book bag, old US Government handouts, math notes from Intermediate Algebra, leaky ballpoint pens, and a smashed banana littered the inside.

Old US Government handouts is one item in a series of four. Math notes from Intermediate Algebra is the second item in the series. You need a comma to separate one item from the other.

Go back to the sentence to try again.

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