U20-2 Pronunciation
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U21-2 Pronunciation
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U20-3 Pattern Practice
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U20-5 New Words and Expressions in Lesson 39
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U19-2 Pronunciation
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U21-7 New Words and Expressions in Lesson 42
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U19-5 Dictation
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U19-3 Pattern Practice
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U19-7 New Words and Expressions in Lesson 38
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U19-6 New Words and Expressions in Lesson 37
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