◎ 题干
You _____ thank me. It's my duty to do so.
[     ]
A. need to
B. don't need to
C. don't need
D. needn't to
◎ 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“You _____ thank me. It's my duty to do so. [ ]A. need to B. don't need to C. don't needD. needn't to…”主要考查了你对  【助动词】【不定式】  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。