We started working here three year ago A. We worked here for three year B. We have no longer worked here for three years C. We have worked here for three years D. We will work here in three years

We started working here three year ago
    A. We worked here for three year 
    B. We have no longer worked here for three years
   C. We have worked here for three years 
   D. We will work here in three years

`Cấu  trúc : S  +  strarted  +  V  -  i n g  +  thời gian`

       `hoặc : S  +  have  /  has  +  since  /  for  +  khoảng  thời  gian`

`A  và  D   sai  thì  . B  sai   nghĩa.`