The teacher gave the books to all the students except __________who had already got them.A. the ones B. ones C. the others D. some ones应该是指代已经有书的学生，但是我在想，如果用ones前面是不是应该有提到那些有书的学生，后面为了避免重复才用ones？ 可是前面没有提过那些有书的学生这个词。