他的雄心是成为公司最年轻的经理。

His ___ambition is to become the youngest manager in the company.

成为一名科学家是她最大的心愿。

Becoming a scientist is her greatest ___ambition.

她的雄心壮志是成为公司的首席执行官。

Her ___ambition is to become the CEO of the company.