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Not until I dropped off from school ____ how much time I had wasted.
A.didn't I realizeB.I realizedC.I didn't realizeD.did I realize
D

试题分析:考查倒装句:句意:直到我在学校下降了,我才意识到浪费了多少时间。Not until引导时间状语从句,放在句首的时候,主句用部分倒装,因为前面有not,主句部分的谓语是肯定的,选D。
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