她的沉默充分表露了她的真实感受。

Her silence ___spoke ___volumes about her true feelings.

古代建筑不言而喻地展示了该文明的先进知识。

The ancient architecture ___speaks ___volumes about the civilization's advanced knowledge.

他主动提供帮助，充分体现了他慷慨的品格。

His willingness to help without being asked ___speaks ___volumes for his generous character.