◎ 题干
—Could you please come to the museum with me this afternoon?
—Sorry, I_____. I have to take a piano lesson at 2 p.m.
[     ]
A. couldn't
B. mustn't
C. can't
D. needn't
◎ 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“—Could you please come to the museum with me this afternoon? —Sorry, I_____. I have to take a piano lesson at 2 p.m. [ ]A. couldn't B. mustn'tC. 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。