Tolong bantu jawab:)

1. The plants were watered by me yesterday.
2. Wood is chopped in the backyard by my Father.
3. That snowman was made by Billy.
4. The project will be finished by us next week.
5. The vegetables are going to be harvested by them.
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6. My grandfather built the house in 1978.
7. A mechanic is fixing my father's car.
8. My mother will cut the flowers tomorrow for her birthday.