testament|testaments

她的快速康复证明了这个新疗法的有效性。

Her speedy recovery is a ___testament to the effectiveness of the new treatment.

这些保存完好的手稿是古代文明智慧的有力证明。

These well-preserved manuscripts are powerful ___testaments to the wisdom of ancient civilizations.

他的成功是对他努力工作最好的证明。

His success is a ___testament to his hard work.