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-Thegroundiswet.-Thegroundiswet.-Itmusthaverainedlastnight,?[]A.hasn'titB.didn'titC.mustn'titD.isn'tit

题目详情
-The ground is wet.
-The ground is wet.    
-It must have rained last night,_____?    
[     ]
A.hasn't it        
B.didn't it    
C.mustn't it        
D.isn't it
▼优质解答
答案和解析
B