Nobody knew more about him,________

问题描述:

Nobody knew more about him,________
A.did it B.didn"t they C.did they D.didn"t it

陈述部分的主语是 everybody,everyone,anybody,anyone,somebody,someone,nobody,no one,none,neither 时,其反意疑问句的主语需用复数代词they.
又因为nobody是否定词,前否后肯,所以就用did...
所以选C...