—What a pity! Their experiment is a failure.—They ________ better under more favorable conditions.A．should have doneB．could have doneC．must have doneD．may have-高中英语-n多题

◎ 题干

—What a pity! Their experiment is a failure.
—They ________ better under more favorable conditions.

A．should have done

B．could have done

C．must have done

D．may have done

◎ 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“—What a pity! Their experiment is a failure.—They ________ better under more favorable conditions.A．should have doneB．could have doneC．must have doneD．may have…”主要考查了你对【虚拟语气】，【情态动词】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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