◎ 题干
—Did you have to take a bus to school?
—Yes, I ______.
[     ]
A. had
B. was  
C. did
◎ 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“—Did you have to take a bus to school?—Yes, I ______.[ ]A. hadB. wasC. did…”主要考查了你对  【助动词】  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。