Решение:
1. We treated children with an ice-cream.
Пассивный залог: Children were treated with an ice-cream (by us).
2. Father fixed the vase again.
Пассивный залог: The vase was fixed again (by Father).
3. The Morissons always set the table at 6.
Пассивный залог: The table is always set at 6 (by the Morissons).
4. The doctor won’t operate on him tomorrow.
Пассивный залог: He won’t be operated on by the doctor tomorrow.
5. My uncle Jeremy lost his wallet last week.
Пассивный залог: His wallet was lost by my uncle Jeremy last week.
6. He usually accounts for every penny.
Пассивный залог: Every penny is usually accounted for (by him).
7. I will tell you when the train leaves.
Пассивный залог: You will be told when the train leaves (by me).
8. The post office received the telegram late at night.
Пассивный залог: The telegram was received by the post office late at night.
9. The lawyer will take an interest in those facts.
Пассивный залог: An interest will be taken in those facts (by the lawyer).
10. I’m not sure they will approve of this innovation.
Пассивный залог: I’m not sure this innovation will be approved of (by them).