revealing

他微笑着，露出洁白的牙齿。

He smiled, ___revealing strong white teeth.

他因向俄罗斯人泄露秘密而被监禁。

He was jailed for ___revealing secrets to the Russians.

她因向记者透露敏感信息而冒了丢掉工作的风险。

She risked her career by ___revealing sensitive information to a journalist.