______ is the language that you learn to speak from birth.Đoạn văn9/38Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that best completes each of the following sentences from 9 to 10. ______ is the language that you learn to speak from birth.First languageSecond languageForeign languageOfficial languageGiải thíchĐáp án A