Jack: Hello, can I help you ? 　
    Ben: How much are these puzzles? 　
    Jack: They're thirty-nine yuan each . 　
    Ben: How much are those cars? 　
    Jack: They're fifty yuan each. 　
    Ben: Oh, it is too expensive. Mmm...I like those bears, but I do not like 　
    the dolls. Can I have a bear, please? 　
    Jack: Forty-six yuan, please. 　
    Ben: OK. Here you are. 　
    Jack: Here is your change. 　
    Ben: Thank you. Good bye! 　
    Jack:See-you!
    指导老师:克梅