Sentence Completion and Error ID?

<p>These are my only weaknesses on the SAT now and have the following issues:</p>

<p>1) I don't know the words half the time for CR sentence completion. How can I get better? I'm a junior right now.</p>

<p>2) Sometimes I have no idea what the problem is. What checklist should I use if the answer is not obvious?</p>

<p>you can start studying for vocabulary by using the direct hit svocabulary list.It is a really good vocabulary list.To help you narrowo down the answer you have to use hints such as the word connatations and conjunction.The princeton review critical reading and writing book clearly explains this method.</p>