证件是他事前准备好的。

He had prepared the papers beforehand.

youdao

问问以下问题，这就是治疗因想知谈论什么而感到不安的最好方法，或者你可以事前准备好一些东西。

Ask questions—this is the best cure for the anxiety of wondering what to talk about--or you can prepare a few in advance.

youdao

问问以下问题，这就是治疗因想知谈论什么而感到不安的最好方法，或者你可以事前准备好一些东西。

Ask questions—this is the best cure for the anxiety of wondering what to talk about--or you can prepare a few in advance.

youdao