Question

Didn't people make butter from milk

Answer 1

Wasn't butter made from milk by the people.


Hope this helps you....... :)

Answer 2

Question :

Didn't people make butter from milk?
(Change the voice)

Answer :

Wasn't butter made from milk?

Here, 'by people' is invisible in Passive voice and in active voice, 'people' acts as the subject.

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