The correct form to rewrite the given sentences is:
Mi hermano me <u>la</u> compró.
Juan nos <u>lo</u> recomendó
Yo se <u>lo</u> preparé
Ellos te <u>la</u> mostraron.
<h3>What are the Indirect Object Pronouns in Spanish?</h3>
The indirect object pronouns, taking into account the personal pronouns are:
<em>Yo:</em> me
<em>Tú: </em>te
<em>Usted:</em> le
<em>Él:</em> le
<em>Ella:</em> le
<em>Ello:</em> le
<em>Nosotros / Nosotras:</em> nos
<em>Vosotros / Vosotras:</em> os
<em>Ustedes:</em> les
<em>Ellos / Ellas:</em> les
To identify the appropriate IOP in each sentence, identify the noun in the sentence, replace it with the appropriate personal pronoun, and finally use the corresponding IOP with the help of the guide above.