Plz help will mark brainliest

Translate they will know into spanish

Choose the correct use of the spanish preposition para in the following sentence. para aprender un idioma bien, hay que practicar fuera del salón de clases. "in order to," followed by an infinitive "to," referring to a destination "by," referring to a deadline intended for a goal or destination

Can someone me to find the right verbs and conjugations in spanish?