—Have you been teaching here since graduation?
—No, I on a farm for five years．
A. had worked
B. have worked
C. was working
D. worked
网友回答
A. had worked
B. have worked
C. was working
(答案→)D. worked
解析：考查时态，根据句意：--自从毕业你一直教书吗？--没有，我在农场工作了5年，可知在农场工作是过去的5年，现在在教书，用过去时。选D。