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How to ace your vocabulary tests
Make a list of the words you don't know.
If you know the words you're going to be tested on, that's great, and you can easily make the list. If you're studying for the act, sat, or gre, that makes it a little more complicated.
However, there are many lists of words commonly used on these exams, so with a little online research, you can easily find a good number of words to start working on. Look up the words and write down definitions.