问题
单项选择题
I knew nothing of the motives behind his recent move, and I don't know either the person to put him up to the action.
A．nor did I know ... who
B．not did I know ... that
C．nor do I know ... that
D．either did I know ... who
答案
参考答案：A
解析：结构应用。本句是个并列否定句。either一般不用于否定句中，所以选项D不对；not表否定不需要倒装，所以选项B也不对；nor表否定需要倒装且前半句是一般过去时，所以应用nor did I know…；第二个空白处需要填一个可引导定语从句修饰person的关系代词，在此who合适；所以选项A正确。