who does the yellow backpack belong to?这句有没有语法错误?为什么Who 不是wh

who does the yellow backpack belong to?这句有没有语法错误?为什么Who 不是wh Whom/Who does the bike belong to?为什么是does不是is? Who does it belong to? 为什么不能用who does it belong to who does the watch belong to正确吗?为什么不能用whom? Who does this watch（belong）to? 1,who does this coat belong to? 这句话为什么用who 不用whom啊 .who does this book belong to? who do these books belong to?who does these book Who does the key ring belong to?(同义句）____ _____the key ring? who do you know does the book with a red cover belong to 请问Who does this belong to 这个说法对吗?