ByEmilia Barska General English,ICAO Requirements,Vocabulary | How to Say It?ICAO Level 4 Vocabulary: Blue-Collar vs White-Collar WorkerICAO Level 4 Vocabulary: Blue-Collar vs White-Collar Worker Today we’ll concentrate on ... learn more21/11/2016 No Comments blue collar, blue collar workers, general english, ICAO vocabulary, listening, plain english, plain language, podcast, useful vocabulary, white collar, white collar workers
