At the end of their stay ask for the keys back so you can use them the next time someone comes to stay.

在他们临走的时候要回钥匙，以便下次有人来留宿的时候用。

youdao

I think I put the keys back in the drawer, but I couldn't swear to it.

我觉得我把钥匙放回抽屉里了，不过我不敢肯定。

youdao

I think I put the keys back in the drawer, but I couldn't swear to it.

我觉得我把钥匙放回抽屉里了，不过我不敢肯定。

youdao