Rewrite these sentences in the passive voice. 1] who discovered australia? 2] an architect is designing mary's new house 3] they will install air-conditioning in their office 4] your climbers are planning an expedition up mount everest 5] has jason fed all the animals?
1) Who was Australia discovered by?
2) Mary's new house is being designed by an architect.
3) Air-conditioning in their office will be installed by them.
4) An expedition up Mount Everest is being planned by four climbers.
5) Have all the animals been fed by Jason?