SPRINGFIELD — Despite being on his third draft of gambling expansion legislation, Rep. Lou Lang still has dozens of unanswered questions about internet gambling and sports betting that he hopes lawmakers and stakeholders can help him answer.The Skokie Democrat gave testimony at a joint session of House and Senate committees Wednesday. The hourslong hearing focused on expanding gambling in Illinois — specifically online poker, virtual casinos, fantasy sports and sports betting.The meeting was the second of two …