这位老师似乎没有为这堂课做太多准备。

The teacher didn't seem to have done much ___preparation for the class.

球队将失败归咎于伤病和缺乏准备。

The team blamed injuries and lack of ___preparation for their failure to win.

亚斯明协助了这篇文章的准备工作。

Yasmin assisted in the ___preparation of this article.