Нужно раскрыть скобки на правило passive voice or active voice: 1. the cake (bake) last night. 2. mary (paint) a nice picture. 3. they (tidy) their room. 4. they blackboard (clean) by tom. 5. he (eat) a tasty apple. 6. the tree (plant) by me. 7. uncle sam (water) a flower. 8. the car (wash) last week. 9. the film (watch) by her. 10. my sister (read) an interesting book.
2. Mary painted a nice picture.
3. They tidied their room.
4. The blackboard was cleaned by Tom.
5. He ate a tasty apple.
6. The tree was planted by me.
7. Uncle Sam watered a flower.
8. The car was washed last week.
9. The film was watched by her.
10. My sister read an interesting book.