Spanish language Q&A Forum

The last subsection, Difference between todo/-a and cada, explains something entirely different.

I'm curious what the content of the missing chapter should be.

Hello,

I am really confused, why abrir is irregular?

The sentence, "Fernando will begin complaining when he arrives".  If he always complains about everything, would it be "cuando llega"?

I never thought that I was misusing definite articles until this exercise.  Apparently, I either add a definitive article when it's not required or omit it when it is.  Is there a rule that I'm missing with this?

For example: For "Asimismo, gobiernos y organizaciones trabajan en políticas para una gestión sostenible del agua.", I wrote: "Asimismo, LOS gobiernos y organizaciones trabajan en LAS políticas para una gestión sostenible del agua".  Why shouldn't I use definite articles where I did?

In a previous question, mover was used in a present tense (Ella mueve...). However, in this quiz, mover was used in a reflexive tense (El perro se mueve). How do we know when to use or not use the reflexive tense? 

In the sentence " solo te estoy pidiendo tu opinión"   why is there a "te" in the sentence.

Also the other sentence using preguntar verb

Why is ‘has been …ing’ sometimes el Pretérito perfecto progresivo and other times a perífrasis verbal?     eg:

Carlos lleva trabajando en ese colegio dos años.

Carlos has been working in that school for two years. 

Laura has been seeing her boyfriend secretly.