句型转换。
1. I think they will come tonight. (改为否定句)
I _____ think they _____ come tonight.
2. I have also been to Shanghai. (改为否定句)
I _____ been to Shanghai, _____ .
3. He did his homework last night.(改为一般疑问句)
_____ he_____ his homework last night?
4. It's very delicious food.(改为感叹句)
_____ _____ the food is !
5. My mother will come home in three days. (对划线部分提问)
_____ _____ will your mother come home?
