根据n多题专家分析,试题“The desk is not dirty. You _____clean it.[ ]A. mustn'tB. shouldn't C. needn't D. can't…”主要考查了你对 【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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