大火彻底摧毁了这座百年老建筑。

The fire completely ___destroyed the century-old building.

连续失败彻底摧毁了他的信心。

The constant failures completely ___destroyed his confidence.

农场主不得不处死患病的奶牛以防止疾病传播。

The farmer had to ___destroy the sick cow to prevent the spread of disease.