4 sentences

1. 我才没荒废人生。

   wǒ cái méi huāng​fèi rén​shēng.

   I'm not wasting my life.

   Source: OpenSubtitles

2. 与猫度过的时光从不会荒废。

   yǔ māo dù​guò de shí​guāng cóng​bù huì huāng​fèi.

   Time spent with cats is never wasted.

   Source: CCMatrix

3. 印度西部，30%的水井已经荒废。

   yìn​dù xī​bù,30% de shuǐ​jǐng yǐ​jing huāng​fèi.

   In western India, 30% of wells have been abandoned.

   Source: CCMatrix

4. 我赞成你设法赚些钱，但请勿荒废学业。

   wǒ zàn​chéng nǐ shè fǎ zhuàn xiē qián, dàn qǐng​wù huāng​fèi xué​yè.

   I approve of your trying to earn some money, but please don't neglect your studies.

   Source: UM-Corpus: Education