where one is at

Ariitaimai Salmon’s two children were among those quarantined in the hotel after they returned from Sydney, where one is at school and one attends university.

One doesn't seem to know where one is at all.

Smith was captured once by the Indians, and, instead of telling them that he was by birth a gent, he gave them a course of lectures on the use of the compass and how to learn where one is at.

So it must always be in making a trip down these inland waters, where one is at the mercy of a capricious current save when a favorite of fortune chances to own a motor boat that scorns the usual drifting process, and speeds along at a ten-mile-an-hour clip, regardless of baffling head winds.

I care nothing for your five o’clock tea of modish drawing-rooms, idle and wearisome like all else in which that world has part; I speak of tea where one is at home in quite another than the worldly sense.