Spanish language Q&A Forum

Does no debe stand for must not or don't have to ?

Regards, 

Alexander

Im not sure when to use each of these tenses. Are they interchangable?

By process of elimination, I selected estuvieron as being the correct answer; however, my preference would have been estaban. 

See the example given below:

Mario estaba de camarero en un restaurante.
Mario was working as a waiter in a restaurant.

Here is the question with the answer:

Mis hijos _estuvieron_ de vendedores en una tienda.
My children were working as shop assistants in a store.

My choice:
Mis hijos _estaban_ de vendedores en una tienda.

Would you explain the reason for the answer being the preterite and not the imperfect, please.

 Since the preposition “a” as a personal “a” wouldn’t “les” also be a correct?

When "explain this" for less than correct answers refers to why the correct answer applies, I think it would be just as helpful if the program explained why the chosen wrong answer is not correct and under what circumstance it would apply.  Too hard maybe for "fill the blank" but possible for  multiple choice.  I think I saw a table that compares these impersonal pronouns, how can I find it? (Algún, alguno, algunos, algunas)

Also, when I looked up the wrong answer I found what I think is less correct English.

Guillermo didn't know many pubs and he wanted to go to some (a random pub). = "Guillermo no conocía muchos bares y quería ir a algún. ALGUNO."

In this case, SOME, implies more than one.

Hi, I'm new to the site and trying to understand how it works. Is there a specific section of the site for these exercises or do they only appear as suggestions in the notebook section? Thanks!

I wondered what was meant here in the English?

Él estuvo en su equipo de fútbol.
He was on his football team.

Thanks

In the example La pájaro vuela sobre tu cabeza, why is it "tu" cabeza. I thought when talking about body parts and clothing we should use the definite articles rather than the possessive adjectives.