['I was shocked to see that I passed my history class with so little effort and studying', 'You must be really good with reading comprehension and remembering facts. Congratulations.', 'I wouldnt say as much as the fact that ive had american history like 4 times before because of highschool and middle school']
So you've retained all of that info and recalled it from memory during the test. I was never a good history student.
I was shocked when I was able to pass my history class so easily when I didnt study much ever.