7. Jane should write some postcards to her relatives.
→ Some postcards should be written to her relatives by Jane.
→ Her relatives should be written some postcards to by Jane.
8. They offered me a new job.
→ I was offered a new job.
→ A new job was offered to me.
9. Sam lends her car to her sister once a week.
→ Sam's car is lent to her sister once a week.
→ Sam's sister is lent her car once a week.
10. This school has taught us many subjects.
→ We have been taught many subjects by this school.
→ Many subjects have been taught to us by this school.
Chúc bạn học tốt!