Spanish language Q&A Forum

Hola.  Could you please explain why, in the following question, "todo aquel que" is a wrong answer?

________ vinieron el año pasado han vuelto este año.All those who came last year returned this year.(HINT: It refers to people in general both male and female)

First off, a minor suggestion wrt this lesson to break the ice: ;)

When you are talking about the position of 'se', you are in fact referring to the position of BOTH 'se' and a corresponding direct object pronoun. You might want to note this in the explanations somewhere.

Now, my real question:

With a participle, does the combo of se & direct object pronoun HAVE to be attached at the end, or this is just an option? "Se la estamos decorando" and "Estamos decorandosela" are both grammatically correct and semantically equivalent, right? Or are we allowed to say "Se la estamos decorando" only because we have two verbs next to each other?

PS

I agree with the other poster who pointed out that these agglutination rules totally warrant a separate lesson.

There has to be a way to make this stuff stick, and not make me fall asleep in the process. What can I do? I've my final on Monday so I need any help I can get.