Student or Learner
He ....... for my company for 3 years until he left 2 years ago.
b. had worked
I think b is correct because the action "work" must happen before the action "leave".
But the key in my test book is a. I can't find any explanation in that book.
I don't know if I'm right. Please check it.
Thanks a lot. I understand now.
I trust BARRON'S test book but recently I've found some questions like that.