几道英语单项选择题.请一一说明理由

几道英语单项选择题.请一一说明理由
--___is it from your home to the school?--About ten minutes' walk.A.How far B.How long
2.--___do you go for a walk everyday?--By the lake A.How B.When C.Why D.Where
3.--____is the small village?--Only a few kilometers from here.AHow long Bhow far