You're very welcome! <3
Standard tests can be rough, honestly, no shame in having a hard time on them. I did not really mean you have to take the tests, just that you can use flashcard sets like this one to memorize the meanings of more advanced words. Of course, the best way to understand words is to read and write a lot; seeing words in context usually helps way more than just memorizing. I am sure you will be able to improve with time; good luck, and see you around! <3