Odpowiedź:
1 The costumes for the parade have been lost.
2 A concert for charity is being given by Adele next week.
3 The audience aren't let to film (the) performances by the band.
4 Who was the mural on the wall painted by?
5 A harvest festival has been organised by our village for about 100 years.
6 I was made by mum to leave the concert by 10:30 pm.
7 A speech was being made by the mayor when it started to rain.
8 How can the food be kept hot?