问题描述：
if you develop the habit of smiling
if you develop the habit of smiling often,youare going to feel a lot better,be more optimistic and gain the cooperation of other.it is weel morth the effort.ihope you that you can smile every day.the friends of the most trusting of mine.
if you develop the habit of smiling often,youare going to feel a lot better,be more optimistic and gain the cooperation of other.it is weel morth the effort.ihope you that you can smile every day.the friends of the most trusting of mine.
问题解答：
我来补答展开全文阅读