The light is still on. They ___ to turn it off when they left the room.A．must fo - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

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

答案

解析

考查虚拟语气。结合上文，灯仍然亮着，可知是对过去的事情的推测。“must+have+done”表示对过去事情的肯定推测；“could+have+done”表示对过去事情的假设。结合题意可知下文是推测语气，故选D。

核心考点

试题【The light is still on. They ___ to turn it off when they left the room.A．must fo】；主要考察你对虚拟语气等知识点的理解。[详细]

举一反三

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A．should be doing, gave

B．should have been doing, was given

C．should do, was given

D．should have been doing, had given

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Perhaps you ________ stop playing computer games now. Your boss may be turning up in the office at any moment.

A．will

B．must

C．should

D．can

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A．was finishing

B．would be finishing

C．just finished

D．had just finished

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____ anyone phone during the board meeting, please tell them I am busy.

A．Should

B．Will

C．May

D．Can

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A should have taken B could have taken C needn’t have taken D mustn’t have taken

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