Convert the sentence provided below from its passive voice structure to an active voice structure: The changes must have been implemented without consulting the advisory board.
Someone must have implemented the changes without consulting the advisory board.
Active voice requires identifying the implied doer of the action and making that doer the subject, followed by the corresponding active verb form and the original object.
Since the passive sentence 'The changes must have been implemented without consulting the advisory board' does not name a specific doer, the active version must supply a general subject, 'Someone', performing the action 'must have implemented'.
This gives 'Someone must have implemented the changes without consulting the advisory board', preserving both the modal 'must have' and the original meaning.
The other options either change the meaning by making 'the advisory board' or 'changes' the subject, or drop the modal perfect construction 'must have implemented' present in the original.
Hence, the answer is Someone must have implemented the changes without consulting the advisory board.
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Important Questions from Active and Passive Voice
Select the option that expresses the given sentence in passive voice.
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Select the correct passive form of the given sentence.
Conduct all the exams in a fair and proper manner.
Directions: Select the correct passive form of the given sentence.
The masons are building the house.
Directions: Select the correct active form of the given sentence.
By whom has this mischief been done?
Select the correct active form of the given sentence.
By whom were you pushed into the mud?
