It is where you left it为什么不说it is there where you left it

It is where you left it为什么不说it is there where you left it —Where is my book -It is there where you left it.正确还是It is w Go and get your bag.It is------- you left it.A.where B.there Go and get your coat .it is（ ）you left it A there B where Ct where you left it in my study.不是状语从句吗?为什么前边还要加 it is直接where不 go and get your coat.it's ()you left it.为什么这里不能填there where, Go and get your coat.It's ____ you left it.A.there B.where C Go and get the bag!It's there where you left it!是这样说的吗? The book is(. )you left it. A.what. B.how.C.when. D.where Your coat is where you left it.在语法上怎么理解? A:where is you school?B:It's __ the left of the bank.(in at do you know where it is 为什么不是do you know where is it?