题目内容：
1. I ____waste time when I was studying.A. was used to
B. used to
C. will use to
D. use to
参考答案：
选择题：1. I ____waste time when I was studying.A. was use
- 题目分类：大学英语1
- 题目类型：选择题
- 号外号外：注册会员即送体验阅读点！
A. was used to
B. used to
C. will use to
D. use to