Question

Answer 1

1 It was known that he bought the new car at a cost of 1,2 billion VND

He was known to have bought the new car at a cost of 1,2 billion VND

2 It was believed that MH370's victims died

MH370's victims were believed to have died

3 It was said that Michael Jackson was the most famous singer in 1970s

Michael Jackson was said to have been the most famous singer in 1970s