He told me that by the end of this year they______together for twenty years．

He told me that by the end of this year they______together for twenty years．

1. A.
   would work
2. B.
   had been working
3. C.
   will have worked
4. D.
   would have been working

He told me that by the end of this year they______together for twenty years．

A．would work                   B．had been working 

C．will have worked               D．would have been working

He told me that by the end of this year they______together for twenty years．