He failed in his business a third time and only then the difficult situation he was in. A

发布时间：2020-08-16 09:06:32

He failed in his business a third time and only then      the difficult situation he was in.
A. I realized
B. I had realized
C. had I realized
D. did I realize

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A. I realized
B. I had realized
C. had I realized
(答案→)D. did I realize
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