A (Ở CÂU TRONG ĐOẠN 4 “BY 1990, AT THE AGE OF THIRTY-FOUR, GATES W...
31. A (ở câu trong đoạn 4 “By 1990, at the age of thirty-four, Gates was the youngest
billionaire in the history of the United States”)
31. A (ở câu trong đoạn 4 “By 1990, at the age of thirty-four, Gates was the youngest
billionaire in the history of the United States”)