随着火势蔓延，火焰变得更大了。

The ___flames grew larger as the fire spread.

当消防车到达时，房子已经着火了。

When the fire engine arrived the house was already in ___flames.

我们站在窗边，火焰越来越近。

We were standing by the window and the ___flames were getting nearer and nearer.