Voice
In the following question, a sentence has been given in Active/Passive Voice. Out of the four/five alternatives suggested, select the one which best expresses the same sentence in Passive/Active Voice. The watchman switched on the lights before it began to grow dark.
The lights were being switched on by the watchman before it began to grow dark.
The lights are being switched on before it began to grow dark.
The lights were switched on by the watchman before it began to grow dark.
The lights were only switched on before it began to grow dark.