1  13 is believed to be an unlucky number

2  English is known to be an international language

3 This song has been heard to sing several times by her

4 He was seen to steal your car

5  It's said that John is the brightest student in class

6  I was asvised to sell that house by her

7 It's dangerouse for us to tkae the shortcut

8 It's thought that he has died a natural death

9 You won't be let to do that silly thing again

10  We are ordered to clean the floor by him

11  It must be seen to belive it

12  It's belived that the earth stood still

13 The children aren't made to work hard

14 That silly thing isn't done again

15 We are begged to help him by them

1. 13 is believed to be an unlucky number.

2. It is known that English is an international language

3. She has heard this song to sing several times.

4. He was seen to steal your car. 

5. Let your book be opened.

6. I was adviced to sell that house. 

7. It is dangerous for the short cut to be taken.

8. He is thought to have died a natural death. 

9. You won't be let to do that silly thing again.

10. We are ordered to clean the floor

11. It must be seen to be believed. 

12. It is believed that the earth stood still

13. The children are not made to work hard.

14. Don't let that silly thing to be done again

15. We were begged to help him