11. Sincestthe road is wet this morning,last night()选择谢谢A it must be raining B it must rain C it must have rained D it must have been rained

问题描述:

11. Sincestthe road is wet this morning,last night()选择谢谢
A it must be raining B it must rain C it must have rained D it must have been rained

C,描述天气用主动故D淘汰;又是对过去事件的肯定推测用must的完成时态。

C it must have rained
从“今早路面是湿的”做出“昨晚一定下过雨”肯定推测
对过去的事作以肯定推测,要用【must(may) have+ 过去分词】