问题
选择题
The manager was very angry, for he had sent his business partner two thousand machines yesterday, half of _________ unqualified.
A．them
B．what
C．which
D．whom
答案
答案：A
本题考查独立主格结构。句意：经理很生气，因为昨天他给他的生意伙伴寄去了2000台机器，其中一半不合格。题中的unqualified为形容词。此题容易误选C。C项前缺少谓语动词。