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题目内容
（国家开放大学管理会计案例）
Only by chance （）.
A. I heard that her mother had died
B. did I hear that her mother had died
C. Had I heard that her mother had died
D. I had heard that her mother had died
A. I heard that her mother had died
B. did I hear that her mother had died
C. Had I heard that her mother had died
D. I had heard that her mother had died
参考答案