Hello! It will be a pleasure to help you. So let's get started:
In this exercise, we need to choose the correct subject pronoun when addressing to someone and when talking about someone. So this is the explanation:
Question 1.
El Señor Díaz
Señor means Mr. so we address him in a formal way using the formal you, which is usted.
To talk about a man we use the third person singular in masculine form, which is él.
________________________
Question 2.
Jimena y Marissa
- Addressing him: Vosotras/ustedes
It matches vosotras (informal) or ustedes (formal). This is so in Spanish, but in Latin America is more often the use of ustedes both in formal and informal way.
It matches the third person plural in feminine form.
________________________
Question 3.
Maru y Miguel
- Addressing him: Vosotros/ustedes
Just as explained in Q3 but in masculine form.
Just as explained in Q3 but in masculine form.
______________________________________
THE REST OF THE QUESTIONS HAVE A SIMILAR EXPLANATION:
Question 4.
La profesora
________________________
Question 5.
Un estudiante
________________________
Question 6.
El director de una escuela
________________________
Question 7.
Tres chicas
- Addressing him: Vosotras/ustedes
________________________
Question 8.
Un pasajero de autobús
________________________
Question 9.
Juan Carlos y Felipe
- Addressing him: Ustedes/vosotros
________________________
Question 10.
Una turista