科学家们正在不懈地寻找治愈癌症的方法。

Scientists are tirelessly ___searching for a cure to cancer.

政策制定者正在寻找减少贫困的有效策略。

Policy makers are ___searching for effective strategies to reduce poverty.

为了解开谜团，侦探们必须勤勉地寻找线索。

In order to solve the mystery, detectives must ___search for clues diligently.