Answer: The first sentence is B. Le. The second sentence is C. Les. The third sentence is D. Te. The fourth sentence is A. Nos.
Explanation: The first sentence is Le because it is in the Usted form. The second sentence is Les because there are two people, and the answer needs to be plural. The third sentence is Te because it is in the tú form. The fourth sentence is Nos because a person plus yourself is in the nosotros form.
Meal time is usually at 3 but can be from anywhere 2-4 in the afternoon. Im not sure what you mean by "restaurant practices" but heres a website that has information of food customs.
https://www.enforex.com/culture/spanish-eating-customs.html
The answer would be =mulato
La escuela de Jorge ofrece clases de arte marciales como el karate y judo.
Answer:
Pedro es Mexicano
Olivia es Española
Mis amigos son argentinos
Sofia y Margarita son Chilenas
El es guatemalteco
Ella es cubana
Nosotros somos americanos
Ellos son Venezolanos
Ellas son Peruanas
Nosotras somos Puertorriqueñas