The streets are all wet. It______ during the night.

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问题 The streets are all wet. It______ during the night.

选项 A、must be raining
B、must have been rained
C、had to rain
D、must have rained

答案D

解析句意：街道都湿了，昨晚一定下雨了。情态动词题。对当前情况进行肯定推测时，一般使用“must+动词原形”；对过去情况进行肯定推测时，一般使用“must+have+动词过去分词”。根据句意可知，本句是对过去情况的肯定推测，所以应选must have rained。

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英语

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