SPANISH HELP ASAP PLEASE! I need these answers to pass so please help!

1. Fill in the blank with the correct conjugation of ser.

•Ella ___ alta

-eres
-soy
-es
-son


•vosotros ___ bajos

-son
-sois
-somos
-eres


2. Choose the sentence that is grammatically correct

-Nosotros sois de Argentina
-Nosotros somos de Argentina
-Nosotros son de Argentina
-Nosotros eres de Argentina


3. Choose the correct verb conjugation for the following pronoun
--> Vosotros <--

-sois
-eres
-son
-somos