我们刚到家，风暴就突然袭来了。

The storm ___broke just as we reached home.

月亮突然消失在云层后，片刻之间，一场猛烈的风暴就爆发了。

Suddenly the moon disappeared behind the clouds and, in a few moments, a violent storm ___broke.

毫无预警地，一场猛烈的风暴在山丘上突然袭来。

Without warning, a fierce storm ___broke over the mountains.