Online video site Hulu, under pressure from its media company parents to generate a bigger profit, launched a subscription service Tuesday with complete access to back episodes of popular television shows, the Associated Press reports. For $9.99 a month, subscribers can get the entire current season of “Glee,” “The Office,” “House” and other shows from broadcasters ABC, Fox and NBC, as well as all the past seasons of several series. The popular, ad-supported web site will continue to have a few recent episodes for free online. In a surprise move, however, paying subscribers will get the same number of ads as users of the free website. Hulu Chief Executive Jason Kilar said keeping ads was necessary to help keep the subscription price low.