Spanish language Q&A Forum

Here, designed by Gaudí is POR but in the Rioja tourist office exercise :luxurious Marqués de Riscal Hotel whose design is by Frank Gehry 

POR is not accepted. What should I note as the important difference?

"Cuánto falta?" means "how much longer".

Can't it also mean "how much do I owe you?"

For example, if you're paying for something with cash and you gave them some bills but still owe them a few coins to reach the total..?  (how many coins are still needed?)

Thank you!

I have gotten confused by a specific use of the personal a.  As I understand it, if you are mentioning a person or group of people, you need a personal a infront of the person.  For example if I am talking about a reporter mentioning Juan, I might say El reportero mencionó a Juan.  It also looks like if I want to say that the reporter mentioned Juan to Ana, I should say  El reportero mencionó Juan a Ana.  

Is this correct?  Is this also a general pattern - i.e. when I would normally use a personal a, but there is an indirect object (Ana), should I always drop the personal a and use the a for the indirect object?

Thanks

HI in the expression lo que admiro mas es la generosidad I put la que because generosidad is feminine but duolinguo said it is lo que, why is this