Those are all spelt correctly. i think you want the english meaning for them
estudiar - study
gusta - like
le - to you/ to him / to her
a ella - to her
Answer: Martín y yo nos divorciamos ahora él es mi ex esposo
Explanation:
ex esposo because ex esposo mean ex husband.
Preterite is the normal past tense talking about events. Eg i went to the park with my sister = Fui al parque con mi hermana.
Fui in this case is the preterite
For imperfect it is what you used to do before but do not do any more. Usually ends in
aba
abas
aba
abamos
abais
aban
(for ar endings)
I beleive you are asking if you should use, " tú " when talking to a child.
True...
In Spanish tú is a unformal way of saying you.