某市人民检察院对某案件经过审查，认为需退回公安机关补充侦查，退回日期为2004年5月10日，公安机关应在下列哪个选项所列的日期之前将案件送回检察院( )

A．38893

B．38878

C．38862

D．38908

—When will you be through with your work．Jones
—（）My boss usuallY finds something for me to do at the last minute．

A．Who knows

B．Would you help me

C．I beg your pardon

D．Anything the matter