
[A2]
核心意思
Practice Exercises

Multiple Choice
基本句型
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Practice Exercises

Multiple Choice
“是”用法
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Practice Exercises

Multiple Choice
“有”用法
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Practice Exercises

Multiple Choice
否定形式
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Practice Exercises

Multiple Choice
疑问方式
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Practice Exercises

Multiple Choice
常见混淆
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Practice Exercises

Multiple Choice
语义焦点
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Practice Exercises

Multiple Choice
“是…的”
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Practice Exercises

Multiple Choice
学习提示
Practice Exercises

Multiple Choice