◎ 题干
The ground is wet. It must have rained last night, ______it?
[     ]
A. hasn't
B. wasn't
C. didn't
D. mustn'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“The ground is wet. It must have rained last night, ______it?[ ]A. hasn'tB. wasn'tC. didn'tD. mustn't…”主要考查了你对  【一般过去时】【反意疑问句】  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。