A sentence has been given in Active/Passive Voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active Voice.
Let's help the old aunt in our neighbourhood.
1
The aunt in our neighbourhood should be help by us.
2
The aunt in our neighbourhood should being helping by us.
3
The aunt in our neighbourhood should have been helped by us.
4
The aunt in our neighbourhood should be helped by us.