No sooner________the case of cheating than the public gave us some clues. [ ]

A. we did report  

B. had we reported  

C. did we report  

D. we had reported

报检单上的“报检人郑重声明”一栏应由( )签名。

A．办理报检手续的报检员

B．收货单位的法定代表人

C．报检单位的法定代表人

D．打印报检单的人