1.A short circuit in the lift machine was believed to have caused the fire.

2.Their marroage was decided to have been organised in December.

3.It is known that she is a good swimmer.

4.It is said that Francis is in hospital.

5.It is thought that the children are in bed.

6.It is believed that the robber has worked in the bank.

7.It is believed that nuclear powere stations are dangerous.

8.It is thought that he was on holiday by his colleagues.

9.It is known that cars pollute the inviroment.

10.It is supposed that the new product will come out soon.