Spanish language Q&A Forum

how can i know when to use  the subjunctive or  the indicative with Lo + adjetivo + es que+ subjuntivo / indicativo for example lo importante /raro /bueo 

I am interested in the reasoning for using "los cuales" in "no se sabe si permitirán a los niños a llevar sus móviles apagados dentro de sus mochilas, los cuales podrán encender al final del día".  My understanding is that "que" is used by default when referring to a specific noun, in this case "sus móviles", while "el/la/los/las cuales" is an optional, more formal alternative.  But in my answer the simple "que" was deemed incorrect.  Is this because the "que" would refer to "sus mochilas", being the noun immediately preceding, so the "los cuales" is required to disambiguate?  Or have I misunderstood something more basic?    

Hi, from previous discussions I understands there's no easy to identify "ser" and "estar", however may I confirm "en" must come with "estar". And if I see "a/al" it must come with "ir" (ir and ser have same El Pretérito Indefinido)? 

Thank you, Hayley

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