Change the following sentences into pasive coice.
1. People saw him steal your car.
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2. People think that the prisoner escaped by climbing over the wall.
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3. Mary's mother sent her some money.
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4. Did they build that house in 1972?
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5. John hasn't finished his homework.
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6. He couldn't find his keys.
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7. Did she learn by heart all lesson?
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8. She doesn't tell us this project?
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9. Why shouldn't you do this?
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10. Her boss treats her kindly.
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