By the time the police came to rescue the old woman, she _______for four days un

题型：不详难度：来源：

By the time the police came to rescue the old woman, she _______for four days under the house.

A．buried

B．had buried

C．had been buried

D．has been buried

答案

C

解析

考查时态及语态。By the time+ 一般过去式的句子，后面的主句应用过去完成时态，句意：到警察来就这位老妇人的时候，她已经在房子下面被埋了四天了。根据语境应用过去完成时态的被动语态。故选C。