题目内容
（请给出正确答案）
[主观题]
It was not until the accident happened ______. A) when I realized my carelessness B) that I realiz
It was not until the accident happened ______.
A) when I realized my carelessness
B) that I realized my carelessness
C) as I realized my carelessness
D) when my carelessness has been realized
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