问题
                    
____ in Jiangxi Province the next morning _____ we found many places flooded by the thunderstorm.
                            A:Hardly we had arrived; when
B:No sooner did we arrive; than
C:Hardly had we arrived; when
D:No sooner had we arrived; then
                        
                        B:No sooner did we arrive; than
C:Hardly had we arrived; when
D:No sooner had we arrived; then
正确答案是: