Spanish language Q&A Forum

I learned naranja as the fruit and anaranjado/a as the color.  Obviously language can be used differently throughout the Spanish-speaking communities! Is that the case here?

I got this sentence in a quiz

No puedo ver _____ en la muchedumbre.  

The answer was "a Paula y Cristina".    

I notice that sometimes you put an a before every name, like "a Paula y a Cristina". Is this optional, or are there certain circumstances when the a is required before each person?   

There was a sentence in the lesson: 

Dime cuál te gusta más. 

Tell me which one you like the most. 

Wouldn't this translate to

Tell me which one you like more. ? 

How would you say the correct sentences in Spanish to translate more and the most?

Also, why do speakers of Spanish have a difficult time when learning the comparative and superlative forms in English? It's like they don't realize they exist in Spanish too.

I'm having trouble understanding this answer in a study plan test.  Could you please explain.

Ella estaba lavándose el pelo cuando él llegó.
She was washing her hair when he arrived.

When it is combined with another action that interrupts the ongoing action at that time. The interrupting action is generally in the simple past (see the last example where the ongoing action "She was washing her hair" was interrupted by another sudden action "he arrived”.

 Te ________ hasta que me aburrí y me fui.  
I was waiting for you until I got bored and left.

era esperando
estaba esperando-----my answer
estuve esperando------correct Kwiziq answer
fui esperando

 To me, it seems that the waiting was interrupted by "got bored and left."