问题补充:
Come on! The man in charge of the job you have to explain everything is waiting.
A. who
B. about which
C. to whom
D. where
答案:
A. who
B. about which
(答案→)C. to whom
D. where
解析:考查定语从句。定语从句中的关系代词前面的介词的来源有三种,定语从句的先行词的固定搭配的介词;定语从句中的固定搭配的介词,以及根据句子的意思的介词。本题的to是根据explain to sb而来。故C正确。