题目

-Your coat fits you well．-Thank you．I_______ it when I was on vacation．（ ）A. have boughtB. buyC. bought

-Your coat fits you well．-Thank you．I_______ it when I was on vacation．（ ）

A. have bought

B. buy

C. bought

题目解答

答案

C. bought

解析

步骤 1：确定时态
根据时间状语从句"when I was on vacation"，可知动作发生在过去，应该用一般过去时。
步骤 2：分析选项
A. have bought - 现在完成时的构成
B. buy - 一般现在时的构成
C. bought - 一般过去时的构成
步骤 3：选择正确答案
根据时态分析，正确答案为C，即一般过去时的构成。