句型转换。
1. My sister does housework every day.(变为否定句)
My sister ______ ______ housework every day.
2. Is his name Jack? (作肯定回答)
Yes, ______ ______.
3. They are American cars.(改为单数)
______ ______ ______ ______.
4. The girl under the tree is my sister. (对划线部分提问)
______ ______ is______ sister?
5. There is only one box in the room. (对划线部分提问)
______ ______ ______ ______ there in the room ?
6. There are some new watches in the bag. (对划线部分提问)
______ ______ in the bag ?
7. He usually goes home by bus. (同意句)
He usually ______ ______ ______home.
