It sent markets across the planet tumbling, last week, when executives asked creditors for a six-month extension on repaying its debts.

VOA: standard.2009.12.02

If there are any extension students or undergraduate students who were not able to make section this week, we have an open section tonight at 730.

如果这里有公开课学生或本科生,不能在这周来上课的，今晚七点半有一堂开放课。

哈佛公开课 - 幸福课课程节选