题目内容：
7.While I was in the university, I learned taking a photo, __B__ is very useful now for me.(3分)A. it
B. which
C. that
D. what
参考答案：
选择题：7.While I was in the university, I learned taking
- 题目分类：西北大学大学英语（上）
- 题目类型：选择题
- 查看权限：VIP
A. it
B. which
C. that
D. what