I am a teacher and I in this school for 5 years.A. teachB. taughtC. will teachD. have tau

问题补充：

I am a teacher and I in this school for 5 years.

A. teach

B. taught

C. will teach

D. have taught

答案：

A. teach

B. taught

C. will teach

(答案→)D. have taught

解析：根据后文的时间状语for 5 years，可知时态用现在完成时，故选答案为D。