问题补充:
Mr. Zhang gave all textbooks to all the pupils, except who had already taken tem.
A. these
B. ones
C. the ones
D. the others
答案:
A. these
B. ones
(答案→)C. the ones
D. the others
解析: one本来是数词,但也可用作不定代词,代替前面刚提到的一个东西或人,避免重复前面刚提到的名词,有时one可以有自己的定语或冠词,甚至可以有复数形式。