－Hi, I didn't know you had e back! Have you finished your teaching in America?
－Yes. I Chinese there for more than two years.
A. have been teaching
B. was teaching
C. taught
D. had taught
网友回答
A. have been teaching
B. was teaching
(答案→)C. taught
D. had taught
解析：可联系答.案.网客服索取。