Change the questions from active to passive. Use the agent. . 1 Did Marconi invent the telephone?
Was the telephone invented by Marconi?
2 Did Picasso paint Guernica?
3 Does J K Rowling also write books for adults?
4 Is the orchestra playing Vivaldi's Four Seasons?
5 What did the cavemen paint on the walls?
6 When are the judges giving out the results?