Please help with 12-15? All correct answer plz :) I will give brainliest

12- Sueño ___ ser famosa.
Answer 12: con
Entire sentence: Sueño con ser famosa.
Translation: I dream of being famous.
13- Nos ponemos ___ trabajar mucho.
Answer 13: a
Entire sentence: Nos ponemos a trabajar mucho.
Translation: We get to work a lot.
14- El chico se arrepiente ___ no tener su tarea.
Answer 14: de
Entire sentence: El chico se arrepiente de no tener su tarea.
Translation: The boy regrets not having his homework.
15- ¿Cuál es correcta?
Answer: Es imposible de aprender.
Translation: It is impossible to learn.
[tex]\textit{\textbf{Spymore}}[/tex]