问题补充：
---I think teenagers should be allowed to go out with their friends in the evening.
--- . It’s not safe enough.
A. I agree
B. I think so
C. I don’t know
D. I disagree
答案：
A. I agree
B. I think so
C. I don’t know
(答案→)D. I disagree
解析：根据后文的描述，可知答案为D
