句型转换。
1. The children are enjoying themselves happily. (变为同义句)
The children are _______ _______ _______ ________.
2. Jack is doing his homework. (变为一般疑问句，并作否定回答)
______ Jack _______ his homework? No, he _______.
3. His sister is standing in front of the house. (变为同义句)
The girl _______ ________ _______ ________ the house is his sister.
4. He likes maths because it's interesting. (就画线部分提问)
_______ _______ he _______ maths ?
5. It's sunny in Paris now. (就画线部分提问)
_______ _______ _______ in Paris now?
