1. they made the fire in the traditional way

-> The fire was made in the traditional way.

2. you must collect four bottles of water

-> Four bottles of water must be collected.

3. Irving Berlin wrote the famous song " While Christmas"

-> The famous song " While Christmas" was written by Irving Berlin.

4. how do people cook this kind of food?

-> How this kind of food is cooked?

5. the children are redecorating the sitting-room

-> The sitting-room is being redecorated by the children.

6. have you tidied the kitchen?

-> Has the kitchen been tidied?

7. people didn't organize this festival some years ago

-> This festival wasn't organized some years ago.

8. when I came , they were pulling down the old theater

-> When I came, the old theater was being pulled down.

9. you should opened the wine about an hour before you use it

-> The wine should be opened about an hour before it is used.

10. they have just given the chidren some gilfs

-> The children have just been given some gilfs.