Forme die Sätze ins Passiv um!

1. She sang a song.
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2. Somebody hit me.
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3. We stopped the bus.
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4. A thief stole my car.
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5. They didn't let him go.
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6. She didn't win the prize.
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7. They didn't make their beds.
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8. I did not tell them.
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9. Did you tell them?
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10. Did he send the letter?
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