----Are you a teacher?
----No, but I in Harbin No. 3 High School for 3 years.
Ahad taught
B. has taught
C. teach
D. taught
网友回答
A. had taught
B. has taught
C. teach
(答案→)D. taught
解析：句意：--你是老师吗？--不，但是我在哈尔滨三中工作了五年。根据回答“我现在不是老师了，我在哈尔滨三中工作了五年”只是描述过去的动作（工作了五年）和现在没关系，所以用一般过去时态，选D。