Chuyen sang phủ định, nghi vấn và tra lỗi: 1. My mother is a teacher 2. We are at school now. 3. They are very good. 4. He is an engineer. 5. Our school is on Luong Nghi street, 6. Miss Hoa often goes jogging in the morning. 7. I read books inn my free time. 8. Our house has 5 rooms.
