单选题The road was muddy. It ______ last night.Amust rainedBmust have rainedCmust be rainedDcould have rained
单选题
The road was muddy. It ______ last night.
A
must rained
B
must have rained
C
must be rained
D
could have rained
参考解析
解析：
句意：路很泥泞，昨晚肯定下过雨了。故为B，表示对过去的肯定推测，must表示“一定”，could表示“可能”。
句意：路很泥泞，昨晚肯定下过雨了。故为B，表示对过去的肯定推测，must表示“一定”，could表示“可能”。
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