火势因强风迅速蔓延。

The fire ___spread very rapidly because of the strong wind.

它最初是肝癌，但扩散到了身体的其他部位。

It started off as cancer of the liver but it ___spread to other areas of the body.

似乎火势可能会进一步蔓延。

It seemed that the fire might ___spread more.