In passive voice, the object of the active sentence ("the book") becomes the subject, and the verb tense remains consistent (past tense: "was written").
The passive structure emphasizes the action or the object rather than the doer (the doctor).
Note:- If “possessive adjective” or “a noun with an apostrophe” is used before “home”, “to” or "at" is used before “home” only in case of specific verbs (Not with “arrive” and “reach”.
She arrived at his home means وہ اس کے گھر پہنچی تھی