(·北京海淀区期末)John has always wanted an ipad and he has just saved enough money to buy .A.

问题补充：

(·北京海淀区期末)John has always wanted an ipad and he has just saved enough money to buy .

A. one

B. it

C. this

D. that

答案：

(答案→)A. one

B. it

C. this

D. that

解析：句意：John想买一部ipad，他已攒够买一部的钱。此处one＝a＋n.是同类指代。