______ their return, they were praised as national heroes.[ ]

A. At

B. By

C. On

D. With

上级人民法院审理确认案件举行听证，确认申请人无正当理由不参加听证的，（）。

A.视为撤回确认申请

B.不能继续举行听证

C.作出是否予以确认的裁定

D.应中止审理