Question

Was the sum done by her? change the voice​

Answer 1

Voice change :-

Did he do the sum ?

Rules for changing voice :-

• Change the object of the active sentence into the subject of the passive sentence.
• Use the verb 'to be' in the same tense as the main verb of the active sentence.
• Use the participle of the main verb of the active sentence.

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hope it helps

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Answer 2

Answer:

Did the sum was done by her?