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问题: 英语

Only then () how much damage had been caused.
A had she relized
B did she realized

解答:

句中有具体的过去时间要用过去时的!题中的“then”是那时的意识是一个具体的过去时间要用过去时。再就是 那个 only 引导的从句在句首主句全倒装!