她对人性的看法变得十分愤世嫉俗，认为每个人的行为都只是为了自己的利益。

She became quite ___cynical about human nature, believing everyone acts only for their own benefit.

他对慈善机构的动机持怀疑态度，认为他们只是为了减税。

He has a ___cynical view of charities, thinking they're just for tax deductions.

他对慈善活动的冷嘲热讽让在场的人都感到很不舒服。

His ___cynical comments about the charity event made everyone uncomfortable.