题目内容
【题目】It ___________last night, for the ground is wet outside.
A.would be raining B. would have rained
C. must rain D. must have rained
【答案】D
【解析】
试题分析:句意:昨天晚上可能下雨了,因为外面地面湿了。must have done是对过去发生的动作最有把握的猜测, 意思是 “一定”,故选D.
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