Question

él ella ellos nosotros tú ustedes vosotras yo

1. es la profesora.
2. soy xochi.
3. ¿ son de san antonio?
4. ¿ eres de nueva york?
5. son marcos y thiago.
6. sois de argentina.
7. somos de guadalajara.
8. ¿ es el sr. mendoza?

Explanation:

Each blank is filled with the Spanish subject pronoun that matches the verb conjugation and the context of the sentence (gender, number, formality, first/second/third person).

1. "profesora" is feminine singular, so use the feminine singular pronoun.
2. The verb "soy" is first-person singular, so use the corresponding pronoun.
3. The verb "son" is third-person plural, so use a plural third-person pronoun.
4. The verb "eres" is informal second-person singular, so use the matching pronoun.
5. "Marcos y Thiago" are two masculine people, so use masculine plural third-person pronoun.
6. The verb "sois" is informal second-person plural (feminine), so use the matching pronoun.
7. The verb "somos" is first-person plural, so use the corresponding pronoun.
8. "Sr. Mendoza" is masculine singular, so use the masculine singular third-person pronoun.

Answer:

1. Ella
2. Yo
3. Ellos / Ustedes
4. Tú
5. Ellos
6. Vosotras
7. Nosotros
8. Él