It_five years_I begin to study Engshin. A.was;since B.has been;since C.is;after D.Is;before

分类: 作业答案 • 2021-12-01 16:58:19

问题描述：

It___five years___I begin to study Engshin. A.was;since B.has been;since C.is;after D.Is;before
我知道答案是D,可为什么B不对?

答

如果用since,begin应该用过去式

It___five years___I begin to study Engshin. A.was;since B.has been;since C.is;after D.Is;before