How about some unstructured review time? Let them each look at whatever it is they feel they need to study and ask you questions as they come up? How about shoing a documentary related to the content and having a discussion about it?
There's no need to burn your students out right before the exam. Ease them into it. They'll appreciate it and will perform better test day.
Give your students a rest
The final push before Dallas ISD Testing Season
Testing Anxiety in Dallas ISD Schools