问题
选择题
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
答案
答案：C
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，
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