单选题Mary is so wet. She&

问题补充：

单选题Maryissowet.She_______intherain.A.must be caughtB.must have been caughtC.should have been caughtD.can have been caught

答案：

B解析这题考查情态动词表示对过去情况的推测的用法，根据Mary is so wet.玛丽淋湿了，推测一定是过去遭雨了，must have done 就是对过去的肯定推测。所以选B。