----- Nội dung ảnh ----- IV. Thêm am not, aren't, isn't vào những câu sau: 1. This __________ my pen. 2. Those __________ clocks. 3. They __________ windows. 4. It __________ a pencil. 5. My father __________ a doctor. He is a teacher. 6. This ruler __________ long. It is short. 7. Those schools __________ big. They are small. 8. I __________ a nurse. 9. You __________ engineers. 10. Ba and Bao __________ here.
