Pooh Bear said:
I'd say
" it's been done / finished ". It's = 'it has' in this case
" it's done " is equally good. Where it's = 'it is' - lol - that's
english
for you !
I think "it's been done" might be a Britishism? To my American ears that
phrase would suggest that the work was done by someone else. That is, if
you asked me "how'd your project go" and I answered "it's been done" I would
be suggesting that I hired someone else to do it for me
But "it's finished" or "it's done" both sound correct to my ears.
I could also say "I'm done", or "I'm finished". ("I'm" rather than "It's".)
But those suggest that I am done working on the project but the project
itself is perhaps not quite done - perhaps I got tired of it and quit
prematurely, or perhaps it's a team effort and only my part is complete.
There is also a slight echo of "I'm done for", meaning perhaps that the
project concluded so poorly that I expect a failing grade.
-walter