The butterfly's eye is rather curious.
She looks rather curious with green hair.
We were curious to know where she'd gone.
That girl of yours is curious to learn English.
I am curious to know how that old clock works.
I felt curious how that guy would head for such a miserable end.
It is curious that he should wear a long face for such a trifling matter.
It is curious that no one (should) have noticed his presence.
It's curious that she left without saying good-bye.
It is curious that the old man should remember the names of all his childhood friends.