Select the correct passive form of the given sentence.
"Someone could have been using this password."
Show answer & explanation
Correct answer: A
Explanation
Active to passive voice transformation:
Active Structure: The original sentence is in the Modal Perfect Continuous tense: Subject + could + have + been + verb-ing + object.
The object ("this password") becomes the new subject.
The modal perfect structure ("could have been") is retained.
To make a continuous tense passive, the auxiliary "being" must be added before the past participle of the main verb.
The main verb ("using") changes to its past participle form ("used").
Resulting Formula: Subject + could + have + been + being + past participle.
Passive voice: This password could have been being used.