I. Change sentences into the pasive ( Past simple) .
1. Mrs Allen wrote that novel in 1998.
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2. Nam borrowed the reference book from the shelf yesterday.
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3. The boy ate two loaves of bread last sunday.
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4. He left the letter on the desk some minutes ago.
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5. My mother bought a new bike for me last month.
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6. our form teacher returned our written test to us last lesson.
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7. The Chinese invented paper in the century. A.D
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8. Vietnamese planted trees in their neighborhood a year ago.
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9. THe children played games yesterday
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10. My sister did the housework yesterday.
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11. The publisher published his book in 1996.
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12. They repaired our desk during the weekend.
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13. JAck London wrote the novel " Martin Idon "
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