No, it was cancelled after the first season.
No it has been renewed for a 6th season starting in October
Hostages has not been renewed by CBS at this current time, but it has not been cancelled either.
yes for 13 episodes
As of summer 2014, the show has aired one season, and it has been renewed for a second season.
As of September 2014, it is on hiatus, but it has been renewed for a fourth season for next summer.
House has been renewed for a fourth season. There is no discussion of a fifth season as of yet.
Seinfeld
Yes, thankfully, it did.
No. Cancelled in 2010 after 1 season.
Not yet, the ratings have been so so, and the season finale which just aired was intended to serve as a series finale should NBC decide not to renew.
The television show, Arrow, can be found on the CW Network. As of February 2014, the series was renewed for a 3rd season.
No. Copyright was renewed in 1988, and the show will be protected through 2057.