def checkPassage(passageStr)  
    """Checks to make sure all the words in the passage are  
     spelled correctly.  
     """  
    file = open(dict.txt)
    results = []
    for word in passageStr:
        if word not in file:
            results.append(word)
        else:
            None
    glue = ' '
    return glue.join(results)