问题
选择题
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 been
B．had been
C．would be
D．is
答案
B
题目分析： 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