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Minister Bill De Blasio     in office fewer than 48 hours when he came face to face with his biggest challenge in his life.
A.has beenB.had beenC.would beD.is
B               
             
试题分析: 考查时态。句意:比尔 部长当他面对人生中最大的挑战时,他才上任不过48小时。根据当他面对挑战时,发生在过去,而他上任发生在过去的过去,故用过去完成时,所以选B项。       
考点 : 考查时态
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