他的正式教育在中学后就结束了，但他后来创立了自己的成功企业。

His ___formal education ended after middle school, but he went on to start his own successful business.

她没有接受过正式的艺术培训，但她的画作却极具创造力和表现力。

She has no ___formal training in art, yet her paintings are incredibly creative and expressive.

在许多职业中，获得正式的资格是职业发展的必要步骤。

In many professions, obtaining ___formal qualifications is a necessary step for career advancement.