Spanish language Q&A Forum

I often hear both forms on the radio… “las noticias que tú deberías saber” as well as “las noticias que debes saber” Can you explain the difference. When is it appropriate to use deber in the present tense to me (you should)

This was the question in the test that led me to this lesson,  but the lesson doesn't address the issue of choosing the correct past tense.

Ustedes ________ separados el año pasado.You were separated last year.
The hint tells you to use the tense for estaban, but I don't understand why since this seems to be talking about a definitive time that something happened.  Either the action of separating happened last year or the circumstance of being separated happened last year. Can someone explain why we should choose estaban over estuvieron (ustedes) besides the fact that the "hint" tells us to?
Thanks in advance for  any help!

I am unsure why you choose imperfect for being able to see the view on that particular occasion. 

In Question 6 of the quiz, 'podamos' is used in the sentence. Shouldn't this be 'podemos' or is it used in the subjunctive tense?

Thank you.

Why isn't it en EL verano?