AS3: Organizing quiz questions

Hi,

I'm building an adobe air app using Flash CS6.

Say I have 6 files which contains easy, medium, hard in 2 languages.Each contains 50 questions.

EnglishEasy.as

EnglishMedium.as

EnglishHard.as

SpanishEasy.as

SpanishMedium.as

SpanishHard.as

I have a document class.

What I did on document class is like this.

    private var enQuizEasy:EnglishEasy = new EnglishEasy();

    private var enQuizMedium:EnglishMedium = new EnglishMedium();

    if (mode == "easy")

    {

    wordList = enQuizEasy.enEasyQuiz;

    }

    if (mode == "medium")

    {

    wordList = enQuizMedium.enMediumQuiz;

    }

and so on.

When I complete a level, I did

    if (mode == "easy")

    {

    enQuizEasy.level++;

    }

    if (mode == "medium")

    {

    enQuizMedium.level++;

    }

and check the level and show next level game screen.

Do I have to check these all the time on all of 3 modes?

If I use XML, Is it easy to organize?

And I don't have to use that much if statement?

Hope you understand what I wanna explain.

Let me know your best solution.

Thank you!