The Sensex at the Bombay Stock Exchange crossed the key 19,000 point mark in intra-day trade, on Monday, but after paring its gains, finally ended with a gain of 128 points, or 0.7 percent, at a two-month high of 18,943. The Sensex rose on sustained buying by foreign funds, amid easing crude oil prices. The Nifty at the National Stock Exchange rose 33 points, or 0.6 percent, to 5,687. The benchmark index has already rallied more than 975 points in the last four trading sessions.