完成这个项目给了我巨大的成就感。

Finishing this project brought me great ___fulfillment.

她对自己的工作感到满意，因为完成了所有任务。

She felt satisfied with her job after the ___fulfillment of all tasks.

成为一名医生是他人生最大的满足。

Becoming a doctor was his greatest sense of ___fulfillment.