◎ 题干
It’s more than 8 years since I         a teacher.
A.becomeB.has becomeC.becameD.becomes
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“It’s more than 8 years since I a teacher.A.becomeB.has becomeC.becameD.becomes…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。