I really don’t know I kept the secret papers.A. where was itB. it was where thatC. wher&#

I really don’t know I kept the secret papers.
A. where was it
B. it was where that
C. where it was that
D. where was it that

A. where was itB. it was where that(答案→)C. where it was thatD. where was it that解析：考察宾语从句和强调句的结合。根据句子结构可知，该句为宾语从句和强调句的结合。宾语从句中要使用陈述语气，

就是这个解释