obsess|obsessed

他痴迷于自己的事业。

He ___is ___obsessed ___with his career.

这位侦探被这起未解决的案子所困扰。

The detective ___was ___obsessed ___by the unsolved case.

她沉迷于成名的想法。

She ___was ___obsessed ___with the idea of becoming famous.