Change these sentences into the passive voice:
1. We often clean and decorate our houses at Tet.
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2. My mother donates old clothes and food to the poor every year.
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3. We usually plant trees when spring comes.
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4. Last year my family didn’t wrap Chung Cakes.
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5. Do you paint your house to welcome Tet?
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6. We don’t do exercises during Tet holiday.
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7. They sang a lot of beautiful songs in this place two days ago.
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8. I didn’t watch 7 o’clock news last night.
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9. Did her mother buy her new clothes yesterday?
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10. We visited our teacher last year but this year we won’t.
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11. Do you wash your clothes on your own?
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12. Did he collect all the empty plastic bottles on the floor?
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13. He brushes his teeth three times a day.
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14. Some bad people cut down four precious trees in my garden last week.
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15. My grandmother often told me stories before I went to bed.
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16. The carpenter made this chair for me.
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17. Designers design beautiful houses.
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18. We studied passive voice in the first semester.
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19. I help my parents prepare meals every day.
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20. They don’t eat fish and pork for lunch.
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