he has been working there ( ) 1998.he has been working there (   ) 1998.1 after 2 in 3 since 4 until是3还是4 我不是很清楚 告诉我下为什么这样选

问题描述:

he has been working there ( ) 1998.
he has been working there (   ) 1998.1 after 2 in 3 since 4 until是3还是4 我不是很清楚 告诉我下为什么这样选

选3 since是自从。。。的时候 他从1998年就在那工作了

3 自从1998年他就一直在那里工作
这是一种固定搭配,自从……时候到现在……