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. A child could not have done this mischief.
This mischief could not been done by a child.
This mischief a child could not have been done.
This mischief could not be done by a child.
This mischief could not have been done by a child.