Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled

分类: 作业答案 • 2023-01-10 08:37:38

问题描述：

Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled
为什么B解释下谢谢

答

B since 加过去时,主句要用现在完成时,如：
It has been 5 years since I came here.