belong, go -- (be in the right place or situation; "Where do these books belong?"; "Let's put health care where it belongs--under the control of the government"; "Where do these books go?")
belong -- (be rightly classified in a class or category; "The whales belong among the mammals")
belong -- (be a member, adherent, inhabitant, etc. (of a group, organization, or place); "They belong to the same political party")
belong to, belong -- (be a part or adjunct; "the uniform looks like it belonged to a museum collection"; "These pages don't belong")