Basically，theseattitudesamounttoabelief________leisurecanandshouldbeputtogooduse
B
空格前面是 belief，后面是一个结构完整的句子，解释说明 belief 的具体内容。所以用 that 引导这个同位语从句。
Iunderstoodfromherthatyouundertookotherimportantwork______.
Whydoyoublamehimforhispoorjudgmentonthematter______hereallyneedsisencouragement?
Thestudentsarerequiredto________themainideasofthearticleintheirownwords.
Peoplewhocan’t_______betweencolorsaresaidtobecolor-blind.