◎ 题干
— How long have you been like this?
— ______.

A. Since last month
B. Last month ago
C. Last month before
D. Last month
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— How long have you been like this? — ______. [ ]A. Since last month B. Last month ago C. Last month before D. Last month …”主要考查了你对  【现在完成时】  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。