Переделайте предложение в страдательный залог. 1. The gangsters killed him yesterday morning 2. She hasnt made the dinner yet 3. We should buy a new stove 4. I water the flowers every day 5. A postman has delivered an insured letter

1. He was killed by the gangsters yesterday morning.
2. The dinner has not been made yet.
3. A new stove should be bought.
4. The flowers are watered every day. 
5. An insured letter has been delivered by a postman.