问题补充:
----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
答案:
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。