Question

I read the history book.(change voice) ​

Answer 1

Answer:

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Answer 2

Answer:

Active-

I read the history book.

Passive-

The history book is/was read by him.

(Here, the active sentence can be either in simple present or simple past as past form of read is also read therefore in passive is/was both can come seeing the tense of active sentence)

Hope It Helps