<p>go there:</p>
<p><a href=“http://www.cee.org/usabo/usabo_preparing.shtml[/url]”>http://www.cee.org/usabo/usabo_preparing.shtml</a></p>
<p>seriously…all u need is campbells for the open exam…not even. You can get away with like the student study guide from campbells or maybe a really good ap review book (cliffs/barrons). do the canadian practice problems…sometimes they have the same problems except the wording is a little different.</p>