Ils ________ demeuré à la campagne l'été dernier.They stayed in the countryside last summer.
For me, it is obvious that you should use "avoir" as "demeuré" does not agree in number with "ils". Perhaps if the subject pronoun were singular more care and thought would be required in deciding whether the verb is "être" or "avoir". Just a thought!
Good point. There sometimes are those "hidden hints" if you know where to look :)
Note, that the usual justification whether to use être (intransitive verb) or avoir (transitive verb) doesn't work for demeurer.
Sign in to submit your answer
Don't have an account yet? Join today
Test your French to the CEFR standard