def replace_vars(fname):
    try:
        f = open(fname,'r')
        new_lines = []
        for line in f:
            line_word = []
            word = line.split()
            for w in word:
                w = w.strip()
                if w.startswith('?'):
                    w = w[1:]
                    w = w.replace('_', ' ')
                    w = raw_input("Give me a " + w + ":")
                line_word.append(w)
            new_lines.append(line_word)
        for line in new_lines:
            for word in line:
                print word + " ",

    except IOError:
        print "I could not find a file name" + fname