Only when I was told the news that he himself was the great hero.A. I knewB. I did knowC.

问题补充：

Only when I was told the news that he himself was the great hero.

A. I knew

B. I did know

C. did I know

D. did I knew

答案：

A. I knew

B. I did know

(答案→)C. did I know

D. did I knew

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