Hayo um I would say to go with C)to happen to, usually something bad or negative but I'm not sure just trying to help
Hope your having a nice day
I'm pretty sure it's an adjective phrase because it's describing where it is clean.<span />
I believe the answer is A little hope I helped u with your answer
Based on the text above, "unfinished work" means : Reuniting the Union
Lincoln said that if they do not Reunite the union , the sacrifices of the soldiers that have previously died in the war would be in vain
hope this helps