state gov Kerala (കേരളം) PSC Divisional Accountant Test Series 2025 English Grammar Active and Passive Voice
Select the option that expresses the given sentence in active voice.
A machine had been developed by Dr. John Gibbon in the US after twenty years.
1
Dr. John Gibbon was developing a machine in the US after twenty years.
2
Dr. John Gibbon developed a machine in the US after twenty years.
3
Dr. John Gibbon has developed a machine in the US after twenty years.
4
Dr. John Gibbon had developed a machine in the US after twenty years