Answer:
Translation..hope this is what you're looking for
Explanation:
Aprendiendo un segundo lenguaje puede actualmente incrementar el conocimiento de uno y abilidad en su primer lenguaje
1. C está
2. B están
3. D estamos
4. B está
I'm not exactly sure, if you really don't get it, I recomend asking the teacher for help or if it is for summer, search help from and adult or reliable source, or another answer lol
sorry I count help! but, just some advice!