________anything about the accident，he went to work as usual．

________anything about the accident，he went to work as usual．

A.Not known

B.Known not

C.Knowing not

D.Not knowing

答案及解析： D

解析：

作状语的分调动词know与句子的主语he是主动关系，判断运用现在分词；其否定的构成是在分词短语前加not。