这正是我整个月都在找的那本书。

This is the ___very book I've been looking for all month.

你正是我们这项工作需要的人。

You're the ___very person we need for the job.

他在那堆文件的最底下找到了丢失的纸张。

He found the missing paper at the ___very bottom of the pile.