9. Is she going to write a poem?
=> is a poem going to be written ?
10. Is she making big cakes for the party?
=> are big cakes made for the party by she
11. Are the police making inquires about the thief?
=> are inquires being made about by the police ?
12. Must we finish the test before ten?
=> must the test be finished before ten ?
13. Will buses bring the children home?
=> will the children be brought home by buses ?