句型转换。
1. We go to school by bus. (对划线部分提问)
__________ do __________ go to school?
2. Today is February fifteenth. (对划线部分提问)
__________ the __________ today?
3. The tickets are forty-five yuan. (对划线部分提问)
__________ __________ are the tickets?
4. He bought a computer yesterday. (改为否定句)
He __________ __________ a computer yesterday.
5. The girl is doing her homework now. (改为一般现在时)
The girl often __________ __________ homework.
