Wonderful time usually goes by swiftly.You give us too much knowledge that we don't know before,thank you for teaching us how to be an useful person! 美妙的時光通常會很快過去。你給了我們太多我們以前不知道的知識，謝謝你教我們如何成為一個有用的人！you have been a qualified teachers and even better friend. thank you for all that you have done. 你是一個合格的老師，甚至更好的朋友。謝謝你所做的一切。we all like having you as our teacher. you have our respect and gratefulness. 我們都喜歡讓你當我們的老師。你有我們的尊重和感激。