Réponse :
Bonjour,
Rappel : la voix passive se construit :
Sujet + BE ( conjugué ) + Participe passé ( 3ème colonne verbes irréguliers )
A/ Au présent perfect ----> BE = HAS/ HAVE BEEN
1. The roof has been repaired.
2. The car has been damaged.
3. The tree has been cut down.
4. They have been invited to the party.
B/ Au présent Be + ing ----->BE = IS / ARE BEING
1. The windows are being cleaned at the moment.
2. The houses are being knocked down now.
3. The roof isn't being repaired at the moment.
4. The office is being painted at the moment.
; )