Change the following sentences into passive voice.
1. Mark Twain wrote "Life on the Mississipi"
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2. People must repair that old building
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3. My aunt made this sweater for her son.
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4. Lan is going to invite him to her birthday party.
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5 Minh is feeding the dog. ……………………………………………………………………………………………
6. You should send this letter this afternoon.
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7. The police has just caught the thief
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8. She teaches us grammar and writing.
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9. Phong has to return the scientific book to the library.
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10. Farmers grow rice in Viet Nam.
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11. Lan gave her mother a new scarf on her 45th birthday last week
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12. No one has cleaned that room for ages.
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13. Lien couldn't open the door of the classroom.
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14. My father is going to build the cage .
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15. My sister was playing chess when the phone rang.
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16. I have my sister do my homework.
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17. Linh got her parents to buy a motorbike.
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18. Who invented the telephone?
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19. People say that he is the best doctor.
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20. People say that he eats five bowls of rice .
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21. Nobody has used this bicycle for many years.
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22. They thought that Mai had gone away.
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