2 answers:
The "personal a" is necessary.<-------
<span>Tú oyes ___ tu mamá.
The "personal a" is necessary.<-------
The "personal a" is not necessary.
(with a)you hear your mom
(without a)you listen to your mom</span>
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se caia y se lastimaba sus rodillas. (occording to what i have read that's mostly correct"
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