----- Nội dung dịch tự động từ ảnh ----- EXERCISE 11. ĐIỄN SINCE/ FOR/ AGO VÀO CHỖ TRỐNG. 1. My best friend started working there 5 years_ 2. We haven't talked to each other_ 3. They have used that fridge_ 4. It has been a long time_ we argued that day. many years. we last met. 5. Maria started her business a few months_ 6. I haven't cooked for the family_ nearly 3 weeks.