问题补充：
---Excuse me, I want to buy some stamps. Where can I find a post office?
---I know not far from here. You can easily find .
A. that; it
B. it; one
C. one; it
D. it; that
答案：
A. that; it
B. it; one
(答案→)C. one; it
D. it; that
解析：考查代词，第一空填one，泛指a post office，第二空填it，特指the post office，句意是：--对不起，我想买些邮票。我到哪里可以找到邮局？--我知道一个离这儿不远的邮局，你可以很容易的找到。选C。
