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Since this road is wet and slippery this morning it __________ last night. A. must ra

Since this road is wet and slippery this morning, it __________ last night.

A. must rain B. was raining

C. must have rained D. may rain

请帮忙给出正确答案和分析,谢谢!

发布时间:2017-03-25
参考答案

正确答案:C

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