In the following questions, the sentence has been given in Active/Passive Voice. From the given alternatives, choose the one which best expresses the given sentences in Passive/ Active Voice.
I cannot do this sum.
1
The sum cannot done by me.
2
The sum cannot being done by me.
3
The sum cannot be done by me.
4
I cannot be doing the sum.
5
The sum could not be done by me.