Here you go :)
Yesterday in an accident, Jooni and Kunal hurt themselves.
Details: Move the receiver of the action from the direct object position of the sentence to the subject position of the sentence.
Insert the verb BE in agreement in number with the new subject and in the appropriate tense.
Change the verb to its past participle form.
Optionally place the actor of the verb in the object position after the preposition
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Answered by James