Excellent Question

Today I have quite a bit of studying I need to get done. An average of 3-4 times per class, my professor says, "now that would make an excellent midterm question" or something along those lines. The class meets 3 times a week and it is week number 5 of classes. This means I have over 50 such possible midterm questions. It is hard to know what I need to know for this test tomorrow.