Best AP Spanish Prep Book?

<p>Okay so here is the deal. I've been taking spanish since middle school and I plan on taking the AP exam this May. However, the problem is that I do not feel adequately prepared. My Spanish teacher has not been prepping us at all this year (and will not in the spring) for the upcoming exam so I am pretty much on my own. Plus, I'm feeling rusty.</p>

<p>With that said, my question is which prep book should I use to get a 5 on this exam?</p>