句型转换。
1. Is this his hat? (作肯定回答)
__________________________________________
2. Those pants are nine dollars. (画线提问)
_________________________________
3. We have black and blue sweaters. (同义句)
We have sweaters ________ ________ ________ ________.
4. We need vegetables every day.(改为一般疑问句并作肯定、否定回答)
________ you ________ vegetables every day?
Yes, ________ ________ . ________, we ________ .
