句型转换。
1. There is a tree in front of the classroom. (改为一般疑问句并作否定回答)
_____ _____ a tree in front of the classroom?
No, _____ _____.
2. There are some offices in the hospital. (改为否定句)
_____ _____ _____ offices in the hospital.
3. There are twenty computers in the room. (对划线部分提问)
_____ _____ computers are there in the room?
4. The TV is in my room. (对划线部分提问)
_____ _____ the TV?
5. The science lab is behind the library. (改为同义句)
The library is _____ _____ _____ the science lab.
