They supplied me with good living ________, so I had ________ happy experience.
A.conditions; aB.condition; aC.conditions; /D.condition; /在线课程A
解析：
若表示具体意义的“条件”，condition用复数，如：living conditions生活条件，working conditions工作条件；
若表示泛指的状况、情形，condition用单数。experience作“经历”讲是可数名词，作“经验”讲是不可数名词。