MODERN FAMILY - "Baby on Board" - It's been an up-and-down emotional roller coaster for Mitch and Cam in their quest to adopt another child. Their latest ride has them bringing Gloria in tow as a translator, leaving Jay and Manny to look after Lily, who has a big dance recital coming up. Meanwhile Claire and Phil have a proud parenting moment when they send Alex off to her first prom, but then that is quickly marred with Haley's shocking news of her future plans, on the Season Finale of "Modern Family," WEDNESDAY, MAY 23 (9:00-9:31 p.m., ET), on the ABC Television Network. (ABC/PETER "HOPPER" STONE) LINDA ELENA TOVAR, EDWARD FINLAY, CHRISTINA OCHOA, SOFIA VERGARA, ALBERT MARRERO JR, JESSE TYLER FERGUSON, ERIC STONESTREET