Is that your backpaack?（改为同意句） _____that backpack_____?This

1. Is, yours
2. What is this? 或： What's this?
（划线部分是her dictionary吧）
3. the English fo

1. Is that your backpaack?
= (Is) that backpack (yours)?
2. 如果是对her dictionary划线提问，则为：What is this?
如果是对her划线提问，则为：Whose dictionary is this?
如果是对This划线提问，则为：Which (one) is her diction...

1. Is that your backpaack?
= (Is) that backpack (yours)?
2. 如果是对her dictionary划线提问，则为：What is this?
如果是对her划线提问，则为：Whose dictionary is this?
如果是对This划线提问，则为：Which (one) is her diction...