信不信由你，我妹妹居然在同一条街上工作。

Believe it or not, my sister ___actually works on the same street.

你居然准时到了！真是个惊喜。

You're ___actually on time! That's a nice surprise.

他们居然邀请我参加了他们的私人聚会。

They ___actually invited me to their private party.