Two related points:
1. I required students to define certain terms on the exam I'm grading now. One of the definitions contains the word "modifies" as in "x modifies y." You would not believe how many times I've seen sentences like "x modifys y."
2. I went out of my way to make the exam somewhat easier than the last one try to manufacture a bit of success get dat grades up. I did not succeed in making it easy enough, apparently. I think I'll have to make my exams like those Final Jeopardy questions that "Alex Trebek" (Will Farrell) asked to "Sean Connery" and "Turd Ferguson" and the rest of the gang.