—() does it take her to get to school?

问题描述:

—() does it take her to get to school?
—It takes her around () minutes.
A.How far;twenty-five
B.How long;twenty-five
c.How far;twenty five
D.How long;twenty five
(正确答案是B,我选的是D,我想知道为什么B对,而D不对?十万火急!)
加-和没加-,有什么区别?

B.她去学校需要多长时间,因此用How long.
25的英语表达方式是twenty-five