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                题目内容
                (河南大学-大学英语(一))
            
            
                When l arrived she greeted me at the door, her kids all ()behin
A.standing
B.stood
C.have been standing
D.were standing
                    
                    
                    
                
                
                
            
        A.standing
B.stood
C.have been standing
D.were standing
参考答案