--- Does Li Hua serve in the army?
---No, but he in the army for three years.
A. served
B. has served
C. is serving
D. would serve
网友回答
(答案→)A. served
B. has served
C. is serving
D. would serve
解析：考查时态。句意：—李华在军队里服役吗？—不，他在军队服役三年了。根据句意说明他现在已经不在军队里服役了，在军中服役三年是以前的事情。故使用一般过去时。故A正确。本题容易错选B项，现在完成时表示过去发生的事情对现在的影响，在本句中体现不出。