Speech Exercise: Practice Active listening.
演说作业：练习积倾听。
Preposition is one of the most active parts of speech in English.
介词作为英语中最为活跃的词汇之一，一直是传统教学的难点。
Interjections are an active part of speech in the spoken language.
叹词在口语中是相当活跃的词类。
Interjections are an active part of speech in the spoken language.
叹词在口语中是相当活跃的词类。
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