''Is that your backpack''这个句子怎么翻译

''Is that your backpack''这个句子怎么翻译 is that your backpack?同义句转换 is that your backpack改为复数 Is that your backpack?的中文意思 What color is your backpack?怎么回答? Is ____ your backpack No,it isn't .My backpack is big.That o Your backpack is Is that your backpack?(做否定回答） Is that your backpack?Yes,it's ___ backpack.A his B her C my 谁来帮我翻译一下这个句子Is that your computer game in the lost and found Is that your baseball nick?怎么翻译 Is this your backpack?变复数要怎么变啊!