—Does Li Ping serve in the army?—No but he in the army for five years. A. servedB. has s

问题补充：

—Does Li Ping serve in the army?

—No, but he in the army for five years.

A. served

B. has served

C. is serving

D. would serve

答案：

(答案→)A. served

B. has served

C. is serving

D. would serve

解析：由答语No可知他现在不在部队服役，是以前“服过役”，故用一般过去时。千万不要被时时状语for three years所迷惑，而错选答案B。