it's there where i left it.解释说词句为错,应该表语从句it's where i left i

am not sure where I could have left it中where引导的到底是状语从句还是表语从句 I had left it on the chair.That's where I _____it. I had left it on the table .That's where I__it. 几个英语语法选择题1.WHY!where's my mobile phone?maybe i left it on th i had left it on the chair.that's where i put it.后半句的句型讲解和意思 i found my unbrella where i had left it i am not sure where i should have left it Where are my beys?i can't remember where I left it. 改错：Where are my keys?I can’t remember Where I left it 1Where are my keys?I can't remember where i left it.2Him wri Go and get your coat.It's _____you left it.n　A.there B.where Go and get your coat.It's ____ you left it.A.there B.where C