H1B expiring soon max6yr limit. GC appln 140,485 pending. Any options to continue?

[jmat1]

My H1B expires in April 2011 and this is my max 6 year limit. Green Card application has been filed in Januray 2011 under EB1 with i-140 and i-485 concurrent filing. The current processing timelines on i-140 and i-485 show 4 months; I can only expect a decision by May 2011 in best case. In fact all i-140, i-485, i-765, i-131 applications are pending.
Can I continue to stay and work even after my H1B has expired based on pending i-140/i-485? Can you please let me know my options?