句型转换。
1. My cap is yellow. (对划线部分提问)  
    ______ ______ is ______ cap?
2. The man in the black coat is my teacher. (对划线部分提问)  
    ______ ______is your teacher ?
3. What color is the book? (同义句转换)  
    What's  ______  ______  ______ the book?
4. Whose shirt is that ? (同义句转换)  
    ______ is that ______  ?
5. Those are her red dresses. (同义句转换)  
    Those red dresses ______ ______.