––_______ have you been a volunteer?––Since three years ago. A．How longB．WhenC．How oftenD．What-初中英语-n多题

◎ 题干

—____ have you been a volunteer?

—Since three years ago.

A. How long B. When C. How often D. What

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“––_______ have you been a volunteer?––Since three years ago. A．How longB．WhenC．How oftenD．What…”主要考查了你对【句子成分，句子结构】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。

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