Spanish language Q&A Forum

In this sentence:  "Les lazo la pelota y deben apagarla con las dos manos."  

I throw you the ball, and you must stop it with two hands.

I don't understand the use of 'Les" is it referring to 'you"?

If something is currently better now, but may change, why don't I use estar?  For example, el tiempo está mejor ahora.

In a writing exercise (a day outside), it told me to use es.

I want to say "I met Rosa leaving the theatre", in the sense that Rosa was leaving the theatre. I've written "Me encontré con Rosa saliendo el teatro" but I think that means that I was leaving the theatre when I met Rosa. However, "Me encontré con Rosa al salir el teatro" feels completely wrong, and "Me encontré con Rosa que salía el teatro" sounds right but a bit formal. Is that last translation the only way of removing the ambiguity.

I think it should be noted that there are some additional adverbs which can be combined with de:

cerca (de)

adelante (de)

arriba (de)

Please confirm/update?

I would've said estos without it, but it made me second guess myself and put este. What is this hint trying to say? I'm not understanding how I misinterpreted it. 

A little off topic, but consider:

1. donde, adonde/a donde

2. dónde, adónde/a dónde

and for that matter (or maybe especially for the case of), 

3. quizá, quizás 

Within each group the various options can be used interchangeably. But what factors influence the chosen form? For example do some people tend to use the same form all the time? Do people just randomly use all the forms equally? Do some localities tend to use one form more than others? Is there a pronunciation efficiency issue (similar to y and i  or  o and u, but not a hard-and-fast rule)?

I guess my questions especially apply to quizá versus quizás.