What makes a verb irregular?
does not form its past and present by adding -ed or -d to the past participle
does not form its past and past participle by adding -ed or -d to the present
does not act as a verb in context
functions as a verb but appears as an adjective

A verb is considered irregular when it does not form its past and past participle by adding -ed or -d to the present. For example, drove, driven, swam and swum are irregular.

Singular third person pronouns are “he,” “she,” “it,” “his,” “hers,” “him” and “her,” and third person plural pronouns are “they,” “them” and “their.” the number of people to which you are referring should always match the pronoun you choose (“he” to refer to one male, “they” to refer to more than one male).