please help me ASAP ( and plzzzzzzzzz EXPLAIN the instructions, i don't understand it)

1. Cafetería
Answer 1: La mía.
Explanation:
"Cafetería" is a feminine, singular noun, so its pronoun must agree. Mía.
2. Clases
Answer 2: Las mías.
Explanation:
"Clases" is a feminine, plural noun, so its pronoun must agree. Mías
3. Sombrero
Answer 3: El mío.
Explanation:
"Sombrero" is a masculine, singular noun, so its pronoun must agree. Mío.
[tex]\textit{\textbf{Spymore}}[/tex]