
[A2]
正式与非正式
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Practice Exercises

Multiple Choice
称呼与人称
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礼貌句式
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Practice Exercises

Multiple Choice
语气与委婉
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Practice Exercises

Multiple Choice
词汇选择
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Practice Exercises

Multiple Choice
句子结构
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Practice Exercises

Multiple Choice
语态与焦点
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Practice Exercises

Multiple Choice
书面固定语
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Practice Exercises

Multiple Choice
非正式口语标记
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Practice Exercises

Multiple Choice
切换与分寸
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Practice Exercises

Multiple Choice