The pilot told us that everything was now Ok.Only then___how dangerous the situation had been.A.I realizedB.I had realizedC.did I realizedD.had I realizedC选项打错了.....是Had I realize,T-T

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ThepilottoldusthateverythingwasnowOk.Onlythen___howdangerousthesituationhadbeen.A.IrealizedB.Ihadrea

The pilot told us that everything was now Ok.Only then___how dangerous the situation had been.A.I realizedB.I had realizedC.did I realizedD.had I realizedC选项打错了.....是Had I realize,T-T
The pilot told us that everything was now Ok.Only then___how dangerous the situation had been.
A.I realized
B.I had realized
C.did I realized
D.had I realized
C选项打错了.....是Had I realize,T-T

The pilot told us that everything was now Ok.Only then___how dangerous the situation had been.A.I realizedB.I had realizedC.did I realizedD.had I realizedC选项打错了.....是Had I realize,T-T
选D
only +状语 主句倒装.
then 是时间副词做状语.
所以要倒装.
C realize 用原型,故错.
其他不是倒装.
C had I realize 肯定错啊.
had 后面 是 过去分词.原型 肯定 错了.

only引导的倒装,正确答案D,AB不是倒装排除,C虽然倒装,但是时态重复,明显错误。