Here's the passive voice version of each sentence from your homework:

1) The fire was made in the traditional way.
2) Four bottles of water must be collected.
3) The famous song 'White Christmas' was written by Irving Berlin.
4) How is this kind of food cooked?
5) The sitting room is being redecorated by the children.
6) Has the kitchen been tidied?
7) This festival was not organized some years ago.
8) When I came, the old theatre was being fallen down.
9) The wine should be opened an hour before you use it.
10) The children have just been given some gifts.

Let me know if you need further assistance!