How to put this sentence in the passive voice the sheep were herded into a pen?

The passive voice of the sentence “The sheep were herded into a pen” is “The pen was herded by sheeps”. The subject ‘sheep’ which is neither a do-er or a be-er is being acted upon by the agent ‘pen’.

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.

he will find out what went wrong or happened and how.