I work in the factory?
I am working now? 
I have worked yesterday?
I have been working by one month ?
I worked with him?
I was working when I was little?
I had worked?
I had been working by this day?
I will work at firm?
They will be working together ?
We will have worked night?
I will have been working with Anne?
Sper sa fie corect
Scuze dar am facut cate una de fiecare
nu-i nimic ... oricum mersi