Spanish language Q&A Forum

I have the following sentence: "La sospechosa fue interrogada por la mañana."

How is this tense called? Checking your nice overview https://progress.lawlessspanish.com/spanish-tense-names here, I have guessed it to be one of the Los Pasados Progresivos forms https://progress.lawlessspanish.com/spanish-tense-names - but it seems to be different by using "fue" and not "estar". 

Any help would be appreciated.

No se puede viajar a ese país hasta que ________ seguro.

I don't understand why this sentence is translated as ... ('we' can't travel). Wouldn't it be podemos for *we* ? I thought *puede* was singular for he/her/it

I also don't understand why the answer is *sea* and not *se*

Can someone please explain.

Tiene    and  usted tiene

Both are correct, as the usted is optional to phrase in the sentence.

But it is marked incorrect.    Grammatically it is correct, so I believe it shouldn't be marked incorrrect.