他的妻子证实他那天早上离开了房子。

His wife ___confirmed that he had left the house that morning.

领袖的演讲令人印象深刻，并证实了她对党的信念。

The leader's speech was impressive and ___confirmed her faith in the party.

此外，科学家证实消费主义可能发展成一种强迫症。

Besides, it was ___confirmed by scientists that consumerism may develop into a compulsion.