My speech needs to be 5 min and its only 4 1/2 min...i really need help with my conclusion!?

Speak slowly...I'm serious. A lot of times people rush through speeches in an effort to get it over with, which make them nearly impossible to take in and uncomfortable to sit through. If you need just an extra 30 seconds use it up by pausing at the right times (between points and paragraphs) and going slowly throughout the piece.