Dear Mr. Berko: I own four master limited partnerships that have fallen 70 percent because the price of crude oil has crashed, and the prices of my three blue chip oil stocks have fallen 25 to 30 percent since September. Could you consult your crystal ball and tell me whether oil prices will go back up? If they will, when? And would you recommend that I hold my MLPs and oil stocks or sell them or add to my position? My broker is a nice 30-something kid but way out of his league.