Is there a way I can return a submitted quiz to a student who submitted it and allow them to continue where they left off? 

I was initially unsure if quizzes saved students progress if they did not finish during class time. To make sure they did not lose their work I had everyone submit, even if they were not finished. I am going to return the questions they did not complete to them by printing it on paper. If there was a way though I could return an unfinished quiz back to students to finish that would be great!