Fill in the blank with the correct indirect object pronoun. Yo ____ escribí una carta a mis abuelos ayer.
Answer : Yo les escribí una carta ayer.
Explanation :The indirect object in this sentence is "mis abuelos", that is plural, so the indirect object pronoun has to be plural too: "les" means "a ellos".
Hope this helps!
[tex]\textit{\textbf{Spymore}}[/tex]