— Whose are those books?
— They are _____.

将下列句子变成同意句。
1. This is my pink sweater.
    This ______ sweater is ______.
2. Are these your oranges?
    Are these ______  ______?
3. Whose shoes are these?
    ______  ______ these shoes?
4. Those are our coats.
    Those coats ______  ______.
5. This is their classroom.
    This ______ is ______.
6. There are four books in my bag.
    I ______  ______  ______ in my bag.
7. Do you have any pencils?
    ______  ______ any pencils in your pencil-box?
8. Is that her bike?
    Is that bike ______?