Fueron a las ciudades de Nueva York, Los Angeles y Panama, u mean right? a las ciudades because they are various cities in plural
Since the word <em>frutas </em>takes the article <em>las, </em>or the pronoun <em>las, </em>since in Spanish it is considered to be female, the correct answer here would be las as well:
Isabel y Marta las traen.
Venga a nuestra casa.
Elder always is talked with respect
Usted = you
