The road was muddy. It _____ last night.
A. must rained
B. must have rained
C. must be rained
D. could have rained
A. must rained
B. must have rained
C. must be rained
D. could have rained
【答案】
A. must rained
B. must have rained
C. must be rained
D. could have rained
A. must rained
B. must have rained
C. must be rained
D. could have rained
【答案】
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