Select the correct passive form of the given sentence.
The Inspector had already proved the case before the investigation team took charge of it.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. The case had already been proved by the Inspector before the investigation team took charge of it.
Active voice- Subject + had + v3 + object + other words.
Passive voice- Object + had been + v3 + by + subject + other words.
As the chosen option follows this rule it will be the correct answer.