1. They cancelled all the flights because of fog

→ All the flight were cancelled because of the fog.

2. This road is not used very often.

→ People don't use this road very often.

3. How do people learn languages ?

→ How are languages learnt ( by people )?

4. People advised us not to go out alone.

→ We were advised not to go out alone.

6. The girl did not give me the money.

→ I wasn't given the money by the girl.

→The money wasn't given to me by the girl.

7. A man asked me several difficult questions at the interview.

→ I was asked several difficult questions at the interview by a man.

8. Nobody told me the story.

→ I wasn't told the story.

→ The story wasn't told to me.

9. Oil lamps were used years ago.

→ People used oil lamps years ago.

10. When did they open that hospital ?

→ When was that hospital opened ?

1.Somebody cleans the room everyday.

2.All the flights were cancelled because of fog.

3.People don't use this road very often.

4.How are languages learnt ?

5.We were advised not to go out alone.

6.The money wasn't given to me by the girls.

7.I was asked several difficult questions at the interview by a man.

8.The story wasn't told to me.

9.People used oil lamps years ago.

10.When was the hospital opened ?