remnant|remnants

她用剩下的布料做了个漂亮的抱枕套。

She used a ___remnant of fabric to make a beautiful pillowcase.

曾经的房屋如今只剩下残骸。

The once-home is now only ___remnants.

这座古老的城堡是那个辉煌王朝的唯一遗迹。

The ancient castle is the only ___remnant of that glorious dynasty.