The light is still on. They ___ to turn it off when they left the room.A．must forgetB．could have forgottenC．may forgetD．must have forgotten-高中英语-n多题

◎ 题干

The light is still on. They ___ to turn it off when they left the room.

A．must forget	B．could have forgotten
C．may forget	D．must have forgotten

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“The light is still on. They ___ to turn it off when they left the room.A．must forgetB．could have forgottenC．may forgetD．must have forgotten…”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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