----- Nội dung dịch tự động từ ảnh ----- EX4. Gạch lỗi sai trong các câu sau rồi sửa lại cho đúng. 1. My friend and I was at the hairdresser's yesterday. 2. My sister in law used to had long hair but now she has short hair. 3. Did your father worked in a tobacco factory before he retired? 4. Why you didn't come to the meeting last week? 5. My best friend and I use to hated each other when we first met.