What were the most difficult parts of the CSET Test (Subtests II & III)?

I have taken the first subtest of the CSET and I am taking the last two very soon. I have been studying, but I want to make sure to cover all of my bases.
For those who have taken it, what took you by surprise? What were the most difficult aspects? The last two subtests include Science, Mathematics & the Visual & Performing Arts, Physical Education, Human Development. (For those who forget which topics are in which subtests)