Réponse:
1.A house is built.
2.The children were asked to be quiet.
3.She is expected to come next week.
4.English is spoken in the office.
5.They will be shown several flats next week.
J'espere que sa ta aidée...mais je sais pas si c'est bon car je n'est pas encore apris la vois passive...donc si c'est faux se sera de ma faute désoler