根据要求改变句子
1. They are chicks. (对划线部分提问)
What _______ _______?
2. Is this a playground? (肯定句)
________ ________ a playground.
3. This is a bee. (对划线部分提问)
_______ ________ ?
4. Is that our classroom? (否定回答)
_______,________ isn’t.
5. It is black and red.(对划线部分提问)
________ _______ is it?