Исправь ошибки 1 I has worked. 2 She not helped her parents. 3 Jack has bought a new car? 4 What they have painted? 5 Helen not has changed her bedroom. 6 His father put books in the bookcase

1. I have worked.

2. She hasn't helped her parents.

3. Has Jack bought a new car?

4. What have they painted?

5. Helen hasn't changed her bedroom.

6. His father has put books in the bookcase.