1. They say that the visitors were killed by the terrorists.
-> The visitors are said to have been killed by the terrorists.
-> It is said that the visitors were killed by the terrorists.
2. Many people think Steve stole the money.
-> Steve is thought to have stolen the money
-> It is thought that Steve stole the money.
3 People believed he won a lot of money on the lottery.
-> He was believed to have won a lot of money on the lottery
-> It was believed that he won a lot of money on the lottery.
4. people say that she passed the exam
-> She is said to have passed the exam
-> It is said that she passed the exam
5. It was believed that Anna was leaving the town
-> Anna was believed to have been leaving the town