问题
选择题
The manager was very angry，for he had sent his business partner two thousand machines yesterdy，half of unqualified．
A．whom B what C them D．which
答案
C
考查人称代词作独立主格的逻辑主语。句意：经理非常生气，因为他已发给他商业伙伴两千台机器，其中一半有质量问题。half of unqualified．是独立主格结构，half of 是unqualified的逻辑主语，of是介词，所以此处要用宾格。