研究人员将不遗余力地寻找这种疾病的治疗方法。

The researchers will ___spare ___no ___effort to discover a cure for the disease.

她不辞辛劳地确保她的孩子接受最好的教育。

She ___spares ___no ___pains to ensure her children receive the best education.

这家公司在推出新产品时不惜代价。

The company ___spared ___no ___expense in launching its new product.