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Not until then ________ how important the brakes were.A．I realizedB．do I realizedC．did I realizeD．I

题目简介

Not until then ________ how important the brakes were.A．I realizedB．do I realizedC．did I realizeD．I

题目详情

Not until then ________ how important the brakes were.

A．I realized	B．do I realized
C．did I realize	D．I did realize

题型：单选题难度：中档来源：不详

答案

C

C　[not until在句首，倒装语序。]

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