她的桌子上有一大堆文件。

There was ___a ___mass ___of paperwork on her desk.

秋天，树木变成了一大片鲜艳的色彩。

In the fall, the trees become ___a ___mass ___of vibrant color.

在大风天后，她的头发变成了一团缠结的卷发。

Her hair was ___a ___mass ___of tangled curls after the windy day.