adCenter provides ad preview feature
Finally Microsoft adCenter has an ad preview feature so that you can see if your ad is appearing in Bing, and how it will look. The tool only works from within the Campaigns tab, and it doesn’t support testing by location (yet). You also can’t click on the ad to test it, so there’s no way to test the ad performance or tell exactly which ad is being triggered if you have several identical ads in different ad groups.