问题描述：
英语省略句当助动词情态动词提前后谓语动词的形式是否变化
例如Only then __________（她才意识到）how damage had been caused.（realize）
此处是应填did she realized 还是did she realize
例如Only then __________（她才意识到）how damage had been caused.（realize）
此处是应填did she realized 还是did she realize
问题解答：
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