“Usted” is generally
more formal, while “tú” is a more formal use of the Word you. You would use
usted when referring to teachers, people of authority, and your elders, while
tú is more appropriate for friends and family members.
I think tú form ends in an s when you use it, such as “tú hablas”, meaning you
talk. It seems like the usted form just ends in the vowel of that verb, like in
the 3rd person, for example “usted habla”
Nosotras juntas con Lidia y Adela, fuimos a Colombia de vacaciones.
It would be "Sé Bueno" if thats what your looking for
Eres bueno = you are good
ser bueno = to be good
seas bueno , I really don't know but I it's not the answer
11.Nosotros COCINAMOS la cena.
12.Tu CANTASTE en la opera.
13.Ella ESCUCHA musica en su dormitorio.
14.Ustedes LEVANTARON pesas en el gimnasio.
15.Yo FUI a la tienda de ropa.
16.Ellos FUERON al estudio de béisbol.
17.Tu FUISTE. a un parque nacional.
18.Nosotros FUIMOS al parque de diversiones.
19.Usted FUE al teatro.
20.Ustedes FUERON a la cuidad para comprar ropa.