Question

change the voice

The sensitive fingers of Knight had been ruined by his rugged manual work.

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Answer 1

Answer:

His rugged manual work ruined the sensitive fingers of Knight.

Explanation:

As it is present prefect tense as the method in my perspective this is the answer.

Hope it really helped you!

Answer 2

Answer:

His rugged manual work had ruined the sensitive fingers of Knight. (In active voice)