Next Week: "Testing 1-2-3"

EXAM DAY HAS ARRIVED FOR THE INTERNS -- AND NOT EVERYONE IS READY --CALLIE'S SUSPICIONS OF GEORGE AND IZZIE GROW, AND CRISTINA STRUGGLES TO WRITE HER WEDDING VOWS, ON ABC'S "GREY'S ANATOMY"

Loretta Devine ("Crash") Guest Stars as Adele Webber
Elizabeth Reaser ("Sweet Land") Guest Stars as Ave/Jane Doe

"Testing 1-2-3" - The interns take the biggest test of their careers, their first-year medical exams, as the residents attend to three injured mountain climbers. Meanwhile Callie's suspicions of George and Izzie grow, and Cristina struggles to write her wedding vows, on "Grey's Anatomy," THURSDAY, MAY 10 (8:00-9:01 p.m., CT) on the WFAA-TV.