All three are correct, but the last two options have slightly different meanings. "Being charged" places emphasis on the ongoing of jurisdiction. "Has been charged" gives the impression that everything is in the past and there is no longer any present jury/trial on this case. Hope this helps. ~Andrew

Hi Pelin, All three of the options are perfect uses of English. However, I would say that 'A politician ACCEPTED a/some bribe' would be preferable. Hope this helps! Matt