You can either go to the registry of deeds office and pull it yourself, also see if they are now online, most registeries now are but there are still some that have not modernized yet. your other option is to call teh attorneys office that did you closing and see if they have a copy for you. it may be easier.
You can start with the County Recorder. If you go in to their office they should be able to provide it.
Champaign County Recorder
1776 E Washington St, Urbana, IL 61802 (217) 384-3774