It______ exactly thirty year since I graduated from college.

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问题 It______ exactly thirty year since I graduated from college.

选项 A、was
B、has been
C、was be
D、had been

答案B

解析 since引导的状语从句,表示主句中的动作或状态从过去某个时间开始一直持续到现在,故用完成时态,“It has been…”。
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本试题收录于: 英语题库普高专升本分类
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