I haven't been very good at reading for the driving theory exam, so I guess it's a good thing I got 75% of the answers right on this trial exam.
I tried reading a bunch of chapters, but it didn't feel like it was sticking, so I'm changing my approach to just trying to pass this trial exam, and that seems to have been a good idea, since it then goes on to suggest which chapters I should study based on what I got wrong.