Aquel,
“Aquellas” and “esa” are for girls, muchacho is referring to a boy. Aquel is the best answer
The answer would be "Estoy escribiendo" because estan means they are, esta means he is, and estamos means we are, adn we are talking about something in first person and estoy means I am so this perfectly fits it
Hope this helps
<span>Mi madre mi esta hablando.
</span>
Practico espanol con usted en la escuela.<span>
Veo peliculas con usted.<span /></span>
