◎ 题干
—Let’s go dancing tonight.
—Sorry,  I ________.  I have to go to my guitar lesson.
[     ]
A. mustn’t
B. needn’t
C.  can’t
D. don'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“— Let's go dancing tonight! — Sorry, I ______. I have to go to my guitar lesson. [ ]A. mustn't B. needn't C. 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。