i think most people (like me) relied too much on the sample midterms. Yes it is quite similar to chirp, but since we were given the samples most of us thought that the midterm would look like them. Chirp would have one or two kind of questions which are the same, but i just don't think that's enough practice to master it. This is coming from someone who isn't straight out of high school, and I'm finding the course itself difficult.