问题补充：
--Children should not play football in the streets.
--. It’s dangerous.
A. I don’t think so
B. I don’t know
C. I disagree
D. I agree
答案：
A. I don’t think so
B. I don’t know
C. I disagree
(答案→)D. I agree
解析：根据上文内容Children should not play football in the streets.，和下文答语内容It’s dangerous.可知答案为D
