Make these sentences more formal and academic

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What’s wrong with this sentence? I believe this clearly proves that online learning is better than face-to-face classes.

Errors: first person (“I believe”), exaggeration/absolute claim (“clearly proves,” “better than”).

What’s wrong with this sentence? You can easily see that children always learn more quickly than adults.

Errors: second person (“you”), sweeping generalisation (“always”).

What’s wrong with this sentence? There is nothing worse than unemployment!!

Errors: exaggeration (“nothing worse”), exclamation marks (“!!”).

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