There's a quote like that: https://www.goodreads.com/quotes/801657-repetition-is-the-mother-of-perfection other than that, I would agree with Alex about the closest thing there is in English.

Anything is game. You can just focus on what you want to learn (which is what I do when I teach a language) if you're interested in learning business. Let's talk about it. Literature? Let's read and discuss! Flexibility is best I think =)

If it refers to a thing, it lacks salt. For a person, it means they're unenthused. (http://lema.rae.es/drae/?val=soso)

This is one of those questions that you really need to sort of "get it" to use it properly. I can give some pointers though, Usage of “por”: * Part of the day: El trabajo estará hecho por la tarde * Hour: Quedamos por la mañana * Date: Mis padres fueron a México por el '82 * Places: Esta chica vive por el centro del pueblo * Cause: La noticia se supo por Carmen / No pudieron salir a pasear por la nieve "Para" is used mainly when you know something almost certainly: * Time: El trabajo estará hecho para las 8 * Date: Mi viaje a Londres está previsto para el 8 de julio * Address: Este autobús va para Madrid (hacia Madrid) * Purpose: La fiesta se preparó para celebrar su cumpleaños You could still combine both in a sentence and they keep this usage: * El autobús que pasa por Monterrey va para el DF. * Por las tardes estudio español para entender las películas de Almodóvar * Hoy salí por el centro de Madrid para ver a una amiga de la infancia.

Both are correct, though "fregar" is mostly for when you rub something forcefully against another thing. The best way to say it would be "lavar" (http://lema.rae.es/drae/?val=lavar) because even though "fregar" has a similar meaning (http://lema.rae.es/drae/?val=fregar) it's also colloquially used as a term to mean "annoy" or "to cause harm or prejudice to someone",

<address>Hola Maky, yo estoy enseñando Español aquí de hecho si te interesa. Le lingue sono molto simili, ma che rende anche più facile. (Espero hacberlo dicho bien jaja)</address>