IY. Correct the mistakes

1. I has already worked in the garden. I have already worked in the garden. 2. She not helped her parents yet. She has not helped her parents yet. 3. Jack has bought a new toy car? Has Jack bought a new toy car? 4. What they have painted? What have they painted? (Correct) 5. Helen not has decorated her bedroom. Helen has not decorated her bedroom. 6. His father has took some nice pictures in the park. His father has taken some nice pictures in the park. 7. We have yet not done our work. We have not yet done our work. 8. The boy have not cleaned his bedroom. The boy has not cleaned his bedroom. 9. Where have they were? Where have they been? 10. What your friend has given you for your birthday? What has your friend given you for your birthday? (Correct)