CHỌN CÂU (ỨNG VỚI A,B,C HOẶC D ) THÍCH HỢP VỚI CÂU SAU

Câu 3 :

Chọn câu (ứng với A,B,C hoặc D ) thích hợp với câu sau :

They have worked in that factory since 2001.

A. They have started to work in that factory in 2001

B. They started to work in that factory in 2001

C. They have worked in that factory in 2001

D. They worked in that factory since 2001