It has ever been told that teaching is one of the more noble careers.14/30It has everbeen toldthat teaching is one of themore noblecareers.(A) Has ever been(B) Is(C) The(D) More nobleGiải thíchChọn đáp án D ⇒ most noble Giải thích: cấu trúc one of the + so sánh nhất