题目内容：
—Does Liu Hui serve in the army? —No, but he ________ in the army for three years.A.served
B.has served
C.is serving
D.would serve
参考答案：
选择题：—Does Liu Hui serve in the army? —No, but he _____
- 题目分类：河南师范大学-小学教育（本科)-大学英语Ⅱ
- 题目类型：选择题
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A.served
B.has served
C.is serving
D.would serve