if you have the 2013 Destroyer, you can use this as an answer sheet (sort of)
I found the TS section to be the only section where me and a good other people seem to have the most free time, so I take my time on the Destroyer questions with 40 bio, 30 gchem, and 30 ochem. Especially biology, I look at the answer choices and write notes beside it, mentioning why that choice is wrong.
It is best to review immediately after you got it wrong/right since the brain is best at getting material faster an hour after you saw/learned it.