题目内容
【题目】Only when his wife left him he know that he still loved her.
【答案】did
【解析】句意:只有当他的妻子离开了他,他才知道他仍然爱着她。Only+状语位于+助动词+主语+其他,句子用部分倒装,根据句意可知用一般过去时态,所以答案是did。
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