题目内容：

Nobody ＿the answer.
A has know B knew c didn't know D is knowing

优质解答

B
nobody 作单数使用
A和D都是复数
nobody本身就带否定意义,不必再加not,故不选C.只有not...any...的搭配表示双重否定,没见过说no...not...的.