I asked which language the Bushmen speak/spoke.
(my tack on that one is, if I am talking right now and I am relaying the information to somebody else, I will say "speak''. If I am talking a past action, I say "spoke") Anyway, I am a learner just like you, so let´s wait for confirmation or correction.
He asked how the Cyber Tracker (whatever it means!) works/worked.