Question

Answer 1

1 It is known that cars spoil the environment

Cars are known to spoil the environment

2 It is believed that the robber has lived in the next door

The robber is believed to have lived in the next door

3 It is believed that she is an honest person

She is believed to be an honest person

4 It is thought that the president will arrive soon

The president is thought to arrive soon

5 It is said that he has passed the final exam with the best result 

He is said to have  passed the final exam with the best result