Breakfast is usually at 6-7am. Lunch is usually anywhere from 1-3pm and dinner is usually 7-8pm
For Tener: ¿Tienes las respuestas para la tarea de matemáticas?
For Estar: ¿Estas en la casa de (insert any name)?
Can’t think of one for ser but hope these two help
Answer:
you can use it when you need to say things like
Un: Un gato - a cat
unos: unos gatos- some/male cats
unas: unas gatos- some female cata
una: una gato- a female cat
