Spanish language Q&A Forum

So, is it incorrect to say - Debo comer- Is the use of deber covered in other lessons?

Thanks

Indirect objects/pronouns are clearly necessary in certain cases such as when pegar is used to mean "to hit" someone/something as in "Le pega al hermano" for "He hits his brother." (Golpear takes a direct object as in "Golpeo la pelota y ella la golpea también" as in "I hit the ball and she hits it too.")  

However, when given the sentence (in Duolingo): 

"Did you see the goalie stopping all of their penalties"

why are the translations: 

1) "Viste al portero atajándoles/parándoles/deteniéndoles todos los penales" accepted

while the translations:

2) Viste al portero atajándo/parando/deteniendo todos sus penales aren't accepted?

I know that we use object pronouns in place of possessives with body parts most of the time and sometimes with clothing as in "Me pongo los guantes" for "I put on my gloves" but why #2 supposedly unacceptable (or is it acceptable also)?

Any help would be appreciated as I can find no clear explanation and most translators actually give #2 as the answer.

I have real problems with when to use articles. In this exercise why fruta Y verdura (no articles) but la piel y el rendimiento (articles)?

Thanks for any advice

"Alfredo se quedó tan sorprendido que se puso pálido"

Por qué no es "se puso tan sorprendido"? En la explicación de grammática 'Using convertirse en / ponerse / hacerse / quedarse´, se dice que se debería usar ´quedar´ por los cambios permenantes, y poner por los temporales.