Please check-I have to rewrite with an indirect object pronoun
1. Escribo una carta a mi abuela.
Le escribo una carta a mi abuela.
2.Mando una tarjeta postal a mis amigos.
Les mando una tarjeta postal a mi amigos.
To rewrite the given sentences with an indirect object pronoun, you need to replace the indirect objects (mi abuela and mis amigos) with the corresponding pronouns (le and les). Here are the correct rewrites:
1. Escribo una carta a mi abuela.
Le escribo una carta a mi abuela. (I write her a letter to my grandmother.)
Explanation: In Spanish, the indirect object pronoun "le" is used to replace the indirect object "mi abuela" (my grandmother). "Le" indicates that the letter is being written to her.
2. Mando una tarjeta postal a mis amigos.
Les mando una tarjeta postal a mis amigos. (I send them a postcard to my friends.)
Explanation: In this sentence, the indirect object "mis amigos" (my friends) is replaced by the indirect object pronoun "les", which indicates that the postcard is being sent to them.