<p>If you already have that much vocab in your arsenal, I don’t think it would be productive to study any more vocab. I’ve only went through most of the basic word lists, and just from those alone I’ve been able to breeze through most of the sentence completion questions I’ve seen. It would be a waste of time going through another list of 2000-3000 challenging words when it is unlikely you’ll see more than 4-5 of those words on the actual test.</p>