题目内容：
It ______ exactly thirty years since I graduated from college.A.was
B.has been
C.will be
D.had been
参考答案：
选择题：It ______ exactly thirty years since I graduated f
- 题目分类：河南师范大学-工商管理-大学英语Ⅱ
- 题目类型：选择题
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A.was
B.has been
C.will be
D.had been