---Does your brother serve in the army?
---No, not now. But he in the army for 8 years.
A. would serve
B. was serving
C. had served
D. served
网友回答
A. would serve
B. was serving
C. had served
(答案→)D. served
解析：
这题考查时态，句意是：--你哥哥在军队服务吗？--不，不是现在，但是他在军队8年。在军队8年属于过去的时间，选D。