Take another look at the passage:

Since the roof of Orlando Hall leaks, students know to check their seats. To avoid soaking their pants in a puddle of water and then sitting in damp underwear for an entire class.

You chose to connect the infinitive phrase to the main clause in front, like this:

Since the roof of Orlando Hall leaks, students know to check their seats; to avoid soaking their pants in a puddle of water and then sitting in damp underwear for an entire class.

Unfortunately, you cannot connect these two parts with a semicolon. Review the rules.

Go back to the sentence to try again.

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