How long does it take中it代表什么

How long does it take中it代表什么 How long does it take? HOW long does it take by plane How long does it take?如何回答 How long does it take by t()? how long does it take you? How long does it take by bus How long long does it take you to get there how long does it take?中的take是什么意思 “How long does it take to get home?”里面it指代什么? How long does it take you walk home?(it指代什么) How long does it take to go to school中的it指代什么