The Beijing people ________ by the city government to return old wall bricks，but still more than two million such bricks are needed for the repairs．
A.were askedB.have been askedC.had been askedD.were asking在线课程B
句意是“北京市政府已经要求北京市民归还旧城墙的方砖以进行维修”。根据句意可知此句是现在完成时的被动语态。