The__is very useful无
问题描述：
The__is very useful
无
答
这个问题是无法准确回答的,因为对不同的人而言,自己认为对自己重要的东西那就是很重要的,即very useful.
也就是The (things everyone thinks of it is useful for himself) is very useful.
答
有用的东西太多了。
比如说：钱.
The money is very useful.
答
book.word