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【题目】We have received an order that we _______ the lab for a couple of days.

A.mustn’t useB.not useC.can not useD.may not use

【答案】B

【解析】

考查虚拟语气。句意:我们接到命令,几天内不使用这个实验室。如果是order/command/advice/suggestion等表示“命令/建议/要求”等名词的同位语从句,则从句必须使用虚拟语气,即从句的谓语动词由“(should+ 动词原形”构成,且should经常被省略,所以是(shouldnot use。故选B项。

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