•She was really stupid to quit her job like that.她就那样辞掉了工作，简直是愚蠢透顶。

•Whose stupid idea was it to travel at night?晚上赶路是谁的馊主意？

•He now thinks that retiring early was a stupid thing to do.他现在认为提早退休是件愚蠢的事。

•How could you be so stupid?你怎么会这么傻？

•Have your stupid book back if it's so important to you.要是这本该死的破书对你那么重要的话，把它拿回去吧。

•I hate doing this stupid exercise, I just can't get it right.我讨厌做这种烦人的练习，我就是做不对。