In the last ten years, they _______ three great scientific experiments. A．finishedB．have finishedC．had finishedD．have been finished-高中英语-n多题

◎ 题干

In the last ten years, they _______ three great scientific experiments.

A．finished

B．have finished

C．had finished

D．have been finished

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“In the last ten years, they _______ three great scientific experiments. A．finishedB．have finishedC．had finishedD．have been finished…”主要考查了你对【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

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