Jelaskan Pusingan kelayakan dari Liga Juara-Juara UEFA 2007-08 dalam bahasa melayu

This group featured Liverpool, Porto, Marseille and Beşiktaş. Porto led the group for a long time, Liverpool got only one point in their first three games and needed to win their last three games to ensure qualification. They won the last three games comfortably, securing them a place in the first knockout round.