----- Nội dung dịch tự động từ ảnh ----- Exercise 2: Find ONE mistake and correct it in the sentences below. 1. I just have cut my hair. 2. She hasn't working as a teacher for almost 5 years. 3. The lesson haven't started yet. 4. Has the cat eat yet? 5. Has Jack finished the project already? 6. He has been at his computer for 7 o'clock. 7. She hasn't received any good news since a long time. 8. My father hasn't played any sport for last year.