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求老师解答:"You'dbetternotri"You'dbetternotringmeupbetween9and10.Ianimportantmeetingthen",Dr.Leesaid.[]A.haveB.hadC.washavingD.willbehaving

题目详情
求老师解答:"You'd better not ri
"You'd better not ring me up between 9 and 10.  I ____ an important meeting  then",Dr.Lee said.     [     ]
A. have      
B.  had          
C.  was having      
D.  will be having
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答案和解析
D