CHUYỂN CÁC CÂU SAU SANG CÂU BỊ ĐỘNG.

`1. `People balive that 13 is an unlucky number.

`=>` 13 is believed to be an unlucky number

`2.`They know that English is an international language.

`=>` English is known to be an international language.

`3. `I have heard her sing this song several times.

`=>` This song has been heard to sing several times by her

`4.` People saw him steal your car.

`=>` He was seen to steal your car

`5. `They say that John is the brightest student in class.

`=>` It's said that John is the brightest student in class.

`6. `Open your book.

`=>` Your book is opened

`7.` She asvised me to sell that house.

`=>` I was asvised to sell that house by her

`9. `They think that he has died a natural death....

`=> `It's thought that he has died a natural death.

`10. `He won't let you do that silly thing again.

`=>` You won't be let to do that silly thing again

1. People believe that 13 is an unlucky number.

⇒ 13 is believed to be an unlucky number.

2. They know that English is an international language.

⇒ English is known to be an international language.

3. I have heard her sing this song several times.

⇒ This song has been heard to sing several times by her.

4. People saw him steal your car.

⇒ He was seen to steal your car.

5. They say that John is the brightest student in class.

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

6. Open your book. / let your book be opened

⇒ Your book is opened.

7. She advised me to sell that house.

⇒ I was asvised to sell that house by her.

8. It is dangerous for us to take the short cut.

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

9. They think that he has died a natural death. 

⇒ It's thought that he has died a natural death.

10. He won’t let you do that silly thing again.

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