The mayor of Beijing says that all construction work for the Beijing Olympics ________ by 2008.

A.has been completed

B.has completed

C.will have been completed

D.will have complete

答案及解析： C

解析：

从题干的逻辑关系看，本题应该使用被动语态，故排除B、D两项；

由时间状语by 2008可知，应该使用将来完成时的被动语态，表示从将来某一时间看已经完成的动作。