No sooner______stepped out of the hall than it began to rain.

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问题 No sooner______stepped out of the hall than it began to rain.

选项 A、had we
B、have we
C、did we
D、do we

答案A

解析 当表示否定意义的词“never,hardly,seldom,under no conditions,no sooner”等置于句首时要用部分倒装结构,即将谓语动词的助动词置于主语之前。以no sooner…than/hardly…when引起的从句中谓语若用一般过去时,主句谓语动词就用过去完成时,故选A。
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