1. The puzzle was solved by me.
2. The calls was answered by her.
3. The thief was caught by the police.
4.
5. I planted some of the saplings.
6. The chief guest will give away the prizes.
7.
8. The phone was answered by the little girl
9. The fruits were plucked by the farmers.
10. The basket was sold by the vendor.
11.
12. Mother Tongue will be taught by her.
13. She offered a book to them.