A person is asked how many books he has got from the library during the last semester (I suppose). And they say:
Какие книги вы получали за последние полгода?.
Voyons: after за with the meaning of "during" must follow an accusative. последние can be accusative plural (?)
полгода can be in nom. or accus. singular. Let's say that this construction "за последние полгода" I have found in the net millions of times, but I don't understad the concordance between последние and полгода. Can you help me? Thanks.