句型转换。
1. They are cleaning the window. (改为一般疑问句)
_____________________________________________?
2. Tom is working. (改为一般疑问句)
_____________________________________________?
3. Jim is singing. (改为否定句)
_____________________________________________
4. Kate is dancing. (对画线部分提问)
_____________________________________________?
5. She is sitting near the window. (对画线部分提问)
_____________________________________________?