"If you had it all to do over again, would you have married me?" Yes, guys, there is a right answer. That's something David Smith learns the hard way when bubbly better- half Ann queries him over breakfast. Also right are radiant Carole Lombard and easygoing Robert Montgomery as the stars of this breezy Alfred Hitchcock comedy. For three years, the Smiths have been blissed but battling. But when a technicality voids their union, Mr. misses Mrs, orbiting the tale into the delightful cockamamie of the screwball genre. From a script by Academy Award winner" Norman Krasna, Hitchcock made his change-of-pace foray into all- out humor memorable. "Here again are his unmistakable touches," Look declared. "The net effect is the same, too: another Alfred Hitchcock hit."