Bob___at this school five years ago A.studies B.study C.studyed D.studies

问题描述:

Bob___at this school five years ago A.studies B.study C.studyed D.studies

C 根据后面的 five years ago 五年前,判断。一般过去式

C
有明显的过去时时间状语(Ago),用 过去时

C.studyed
five years ago 表明是过去时态