Answer:
-Mario me presta dinero. (to you, pl.)
-Ellos me escriben mensajes electrónicos. (to me)
-Juana le vende una cartera. (to him)
-La vendedora nos dice dónde comprar trajes de baño. (to us)
-Lola me da los calcetines. (to you, fam. sing.)
-El vendedor les ofrece un descuento. (to them)
Explanation:
yo (I) me
tú (you) te
él (he) le
ella (she) le
ellos (we) les
ellas (you) les
nosotros(they) nos
Pronouns of the Indirect Object
-The pronouns of the indirect object replace a word or phrase, which in the sentence fulfills that function (indirect object).
-The pronoun of the indirect object is placed before the verb, when it is conjugated.