一块石头击中了窗户，玻璃裂了。

A stone hit the window and ___cracked the glass.

我摔倒时磕裂了牙齿。

I ___cracked my tooth when I fell.

在地震中，墙壁开裂，屋顶坍塌。

The walls ___cracked and the roof collapsed in the earthquake.