Positive and Negative
Another technique for eliminating wrong answer choices on the SAT is to look for clues in the question as to what word best fits in the blank(s) provided.
Example Problem
The queen was charitable, magnanimous, and _________________.
Given the nature of the two first words "charitable" and "magnanimous," we may place a plus sign on top of the words to indicate that they are words that represent a positive. Therefore, the next word should also be positive. Looking at the answer choices and marking them positive or negative can eliminate some answer choices from the line-up making getting the right answer easier and more probable.
For this to work, it is important to have a very good vocabulary, of course, but it can be a means for many people to make even the hardest sentence completion questions easier on the SAT.