单选题Last week I took the

问题补充：

单选题LastweekItooktheCivilServiceAdmissionExamination,forwhichI_____fornearlythreemonths．A.had preparedB.would prepareC.was preparingD.have been preparing

答案：

A解析考查时态。句意为上个星期我参加了公务员考试，为了这次考试我已经准备了三个月了。根据句意可知准备了三个月发生在考试之前，故选择过去的过去。