crumble|crumbled

房子颤抖得如此猛烈，以至于你以为它随时都会坍塌。

The house trembles so fiercely that you think it's going to ___crumble any second.

她用手指捏碎了干叶子。

She ___crumbled the dry leaves in her fingers.

建筑物在地震袭击时坍塌了。

Buildings ___crumbled as the earthquake struck.