The cleaner has closed the office change the active to passive

Réponse:

Structure format to the following active voice:

Subject + has + past participle form of the verb + object.

Change the structure to the passive voice:

Subject form of the object (active voice) + has been + past participle form of the verb + by + object form of the subject (active voice).

So the change of this voice:

The office has been cleaned by the cleaner.