(sentence, old_word, new_word)
:param sentence: str a sentence to replace words in.
    :param old_word: str word to replace
    :param new_word: str replacement word
    :return:  str input sentence with new words in place of old words
def replace_word_choice(sentence, old_word, new_word):
    """

    :param sentence: str a sentence to replace words in.
    :param old_word: str word to replace
    :param new_word: str replacement word
    :return:  str input sentence with new words in place of old words
    """

    pass
def replace_word_choice ( sentence , old_word , new_word ) : pass