obtain

在进行任何结构性改动之前，你需要获得房东的许可。

You need to ___obtain permission from the landlord before making any structural changes.

这些书的初版现在几乎不可能获得了。

First editions of these books are now almost impossible to ___obtain.

他花了一个月时间才获得护照。

It took him a month to ___obtain the passport.