Question

You should have done it (make it passive)​

Answer 1

Answer:

It should have been done by you. There may be other ways, but from what I understand of active and passive voice, you can reword it to say: “It should have been done by you"; Or, if you want to say it like Yoda - another form of passive voice - you could say, “By you, it should have been done”.

Answer 2

Answer:

It should have been done by you.