The only test I've ran out of time on is the College Composition exam (I should have done a few practice essays). I had plenty of enough time to finish exams that just asked questions. However, I did my tests a little differently than described above. If I knew the answer, I answered it. If I wasn't sure but felt comfortable guessing then I would guess and Mark It. I may not have been sure about my guess, but I trust my gut, so I probably wouldn't change my answer on these marked questions. If I had no idea, I left it blank. This way, if I got down to just a couple minutes left, I could go back to the unanswered questions and make any guess (i.e. just answer "B"). However, if I had time left over (which I always did) then I could give the unanswered questions a second reading to see if they made more sense, or maybe a subsequent question jogged a memory. Only if I still had time would I take a second look at the Marked questions. I also kept an eye on the clock as I worked my way through the exam so that I wouldn't get into a time crunch.
BA Liberal Studies from Thomas Edison State University