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German as a Foreign LanguageSecond LanguageForeign Language TeachingForeign LanguageLanguage TeachingGerman LanguageTeaching German as a Foreign LanguageLanguage AcquisitionCorpus LinguisticsSpoken LanguageLanguage LearningCommon European Framework of Reference for Languagesthe CEFRConstruction GrammarAcademic LanguageCultural StudiesLearning MaterialsTeaching MaterialsTeacher TrainingGERMAN as FOREIGN LANGUAGE