Personal pronouns designate participants in a speech, be they people, animals or things. The pronouns allow to refer to these elements without the need to name them, designating only their grammatical person, sometimes gender, and their number. The type of pronoun by which an element can be substituted in a sentence corresponds to the function that element plays in the sentence.
in: 22, 24, 26, 28, 30:
The Present of Indicative, in Spanish indicates that the action expressed by the verb occurs at the same moment in which it is spoken