<p>Its is enough you focus on roots words.To answer questions try replacing answer choice and see if the meaning of the scentence is conveyed properly,if not eliminate.I came across this site its quite resourcefull, lot of free stuff for acing sat
[url=<a href=“http://www.vocabularylearningresources.net/SAT.html]SAT[/url”>http://www.vocabularylearningresources.net/SAT.html]SAT[/url</a>]</p>