Haven't gotten to exam 120, but based on the youtube video, you might be able to something like the exam 100 water main team: Hinata + Naruto + Zabuza,
http://forum.naruto.oasgames.com/en/forum.php?mod=viewthread&tid=7339&highlight=exam%2B100
but with flipped setup. e.g. :
x - water main - hinata
zabuza - zabuza clone
x - naruto - x
No one seems immune to poison/immobilization, although I am not sure if hashirama has the bloodthirsty demon passive.