他的办公室在一楼。

His office is ___on ___the ___ground ___floor.

新咖啡店在一栋现代建筑的一楼。

The new coffee shop is ___on ___the ___ground ___floor of a modern building.

为了方便客人，酒店健身房设在一楼。

For your convenience, the hotel gym is located ___on ___the ___ground ___floor.