A-A+
The road is wet. It ______ last night.A.should
问题详情
The road is wet. It ______ last night.
A.should have rained
B.must have rained
C.could have rained
D.must rain请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:B
解析:must与动词的完成时态连用,表示对过去的情况进行肯定的猜测。如表示否定猜测,则用can't+动词的完成形式。