Ex2. Mỗi câu sau chứa một lỗi sai. Tìm và sửa chúng: 1. I haven’t cutted my hair since last June. ………………………………………….. 2. She has not working as a teacher for almost 5 years. ………………………………………….. 3. The lesson haven’t started yet. ………………………………………….. 4. Has the cat eat yet? ………………………………………….. 5. I am worried that I hasn’t still finished my homework yet. ………………………………………….. 6. I have just decided to start working next week. ………………………………………….. 7. He has been at his computer since seven hours. ………………………………………….. 8. She hasn’t received any good news since a long time. ………………………………………….. 9.My father hasn’t played any sport for last year. ………………………………………….. 10. I’d better have a shower. I hasn’t had one since Thursday. …………………………………………..